Data File 1 Statistics in Educational Research

In: Business and Management

Submitted By DaddyWork
Words 1520
Pages 7
Date File 1

Chapter One

1) Determine whether the evaluated group is a population or a sample a) Based on a randomly selected group of 500 patients with high cholesterol, it was found that 67% have heart disease. Is this a population or a sample; explain your answer. Raw data is collected from a subset of patient with high cholesterol to determine numbers describing characteristics of the subset (Bennett, Briggis, & Triola, 2009). The raw data collected from the 500 patients is consolidated and summarized to form sample statistics. The raw data and sample statistics are indications that this is a sample (Bennett, Briggis, & Triola, 2009). b) An investigation of 150 randomly selected local restaurants concluded that 42% of local restaurants have serious health code violations. Is this a population or a sample; explain your answer. The 150 randomly selected local restaurants were used to determine the characteristics of all of the restaurants in local area. Raw data was collected to estimate a population parameter; therefore, this is a population (Bennett, Briggis, & Triola, 2009). 2) Determine whether the given value is a statistic or a parameter. c) A researcher determines that 42.7% of all downtown office buildings have ventilation problems. Is this a statistic or a parameter; explain your answer. The percentage is an average determined by consolidating and summarizing raw data and serves as an estimate; therefore it is a statistic (Bennett, Briggis, & Triola, 2009). d) After taking the first exam, 15 of the students dropped the class. Is this a statistic or a parameter; explain your answer. The number represents a specific amount of the population in the class that dropped out. It serves as a definite number of students that are no longer in the class due to dropping the class (Bennett, Briggis,…...

Similar Documents

Research and Statistics

...Research, Statistics, and Psychology Mickey Leitch PSY/315 November 11, 2012 Heather Joppich Research, Statistics, and Psychology When we are trying to figure out how many people are suffering from a different type of disorder then research and statistics can be very helpful. In the field of Psychology it is important to do your research and record your statistics. We can do this in the way of scientific method. Scientific method is a systematic, step by step procedure psychologists use when conducting research (Haig, 2011). That sounds much like research. Research is the systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions. Looking at these two you can see how they are different but you have to have both in order to complete the research that you need to make your decision. In the rest of this paper you are also going to learn about primary and secondary research and then the discussion of the role of statistics in research. After this the understanding of how important research in psychology really is. When trying to figure out what type of research to use to get the best results you have to look at the primary and secondary research of psychology. When collecting data you have primary and secondary data. Primary is directly from the source, such as a person who witnessed the event or say a person did huge humanitarian efforts, you could ask them for facts. Secondary is anything that is a second......

Words: 815 - Pages: 4

Research and Statistics

...Research, Statistics, and Psychology Paper PSY 315 Week 1 Your Name University Name Course Name Instructor Name Date Psychology uses statistics and research to validate or invalidate theories. Research is used to find answers to questions. The scientific method is important because it provides researchers with the steps they must take to find the answer they are looking for in a study. Statistics are used to prove or disprove theories or questions by using the collection of data and mathematics. Many types of research could be used to make the world a better or even healthier place and this is why statistics and research is important in all fields of study. Research is an important part in the field of psychology. It is used to establish facts rather than opinions. Research is defined as an organized and systematic way to find answers to questions (Henrichsen, Smith, & Baker, 1997). There are four main goals of research in psychology, these goals are describe, predict, explain, and apply. Researchers use the scientific method to meet these goals. The scientific method is described as a process involving fives steps to conduct research. The first step is to determine a problem or make an observation. The second step is the development of the hypothesis. Testing the hypothesis is the third step. Recording the observations is the fourth step. The final step is to draw a conclusion(s) (Cowens, 2006). The scientific method is used in all fields of research....

Words: 961 - Pages: 4

Educational Research

...Basic Principles and Functions of Electrical Machines O.I. Okoro, Ph.D.1*, M.U. Agu, Ph.D.1, and E. Chinkuni, Ph.D.2 1 Department of Electrical Engineering, University of Nigeria, Nsukka, Enugu State, Nigeria * E-mail: oiokoro@hotmail.com 2 Polytechnic University of Namibia, Windhoek, Namibia E-mail: chikuni@yahoo.com ABSTRACT Recent advances in power electronics and highspeed microprocessors have led to considerable attention in electrical machines with regard to their applications in industrial drives. This paper brings to the fore, various types of electrical machines, their operations, and applications, as well as the method of determining their parameters. Various ways of protecting electric machines against overloads and mechanical faults are also highlighted. It is anticipated that the work presented in this paper will be of immense benefit to practicing engineers especially in areas of machine design, maintenance, and protection. (Keywords: electrical machines, operation design, maintenance, protection, stator) the stator and alternating currents are induced in the rotor by transformer action. In the synchronous machine, direct current is supplied to the rotor and Alternating Current (A.C.) flows in the stator. On the other hand, a D.C. machine is a machine that is excited from D.C. sources only or that itself acts as a source of D.C. [5]. It is a common practice in industry to employ A.C. motors whenever they are inherently suitable or can be given appropriate......

Words: 3348 - Pages: 14

Data for Research

...DATA FOR RESEARCH Data can be defined as ‘the quantitative or qualitative values of a variable.’ Data is plural of Datum which literally means to give or something given. Data is thought to be the lowest unit of information from which other measurements and analysis can be done. Data can be numbers, images, words, figures, facts or ideas. Data in itself cannot be understood and to get information from the data one must interpret it into meaningful information. There are various methods of interpreting data. Data sources are broadly classified into primary and secondary data. Importance of Data and Data Collection: Data is one of the most important and vital aspect of any research studies. Researchers conducted in different fields of study can be different in methodology but every research is based on data which is analyzed and interpreted to get information. Data is the basic unit in statistical studies. Statistical information like census, population variables, health statistics, and road accidents records are all developed from data. Data is important in computer science. Numbers, images and figures in computer are all data. Types of Data There are two types- Primary Data and Secondary Data. Primary Data: Sources of Primary Data: Sources for primary data are limited and at times it becomes difficult to obtain data from primary source because of either scarcity of population or lack of cooperation. Regardless of any difficulty one can face in collecting......

Words: 2052 - Pages: 9

Research Statistics

...Statistics is a mathematical concept, its job to organize, analyze, and interpret numbers. Who knew that this concept is a large chunk of a newfound science that is called psychology? Research, Statistics, and Psychology Statistics is a concept that is either loved or dreaded. It is also something that is used in psychology, advertising, and in everyday life. Statistics is used in our everyday thinking process. Observation, guess, observation again in detail, making changes to the situation or process to test that guess is something that every human uses when meeting new people, driving a car, deciding what to buy at the store, etc. Some believe that statistics is a method of finding truth. Psychologists use statistical methods to help find a pattern (if there is one to be found) in the information that they collect doing their research. There are two branches of statistical methods, descriptive statistics, and inferential statistics. Descriptive statistics are used to sum up and describe a collection of numbers from one’s research. Inferential statistics are used draw conclusions and make suggestions based numbers from a study. Research is the main ingredient in statistics. Research is occurs when a person goes above and beyond and investigates the material concerning the topic further than one has to. The scientific method is also another part of statistics. The scientific method by definition is “principles and procedures for the......

Words: 728 - Pages: 3

Quantitative Research Methods in Educational Planning

...Quantitative research methods in educational planning Series editor: Kenneth N.Ross Module John Izard 7 Trial testing and item analysis in test construction UNESCO International Institute for Educational Planning Quantitative research methods in educational planning These modules were prepared by IIEP staff and consultants to be used in training workshops presented for the National Research Coordinators who are responsible for the educational policy research programme conducted by the Southern and Eastern Africa Consortium for Monitoring Educational Quality (SACMEQ). The publication is available from the following two Internet Websites: http://www.sacmeq.org and http://www.unesco.org/iiep. International Institute for Educational Planning/UNESCO 7-9 rue Eugène-Delacroix, 75116 Paris, France Tel: (33 1) 45 03 77 00 Fax: (33 1 ) 40 72 83 66 e-mail: information@iiep.unesco.org IIEP web site: http://www.unesco.org/iiep September 2005 © UNESCO The designations employed and the presentation of material throughout the publication do not imply the expression of any opinion whatsoever on the part of UNESCO concerning the legal status of any country, territory, city or area or of its authorities, or concerning its frontiers or boundaries. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means: electronic, magnetic tape, mechanical, photocopying, recording or otherwise,......

Words: 14672 - Pages: 59

Educational Research

...What is Educational Research? A cyclical process of steps that typically begins with identifying a research problem or issue of study. It then involves reviewing the literature, specifying a purpose for the study, collecting and analyzing data, and forming an interpretation of information. This process culminates in a report, disseminated to audiences, that is evaluated and used in the educational community. (Creswell, 2002) In less comprehensive terms, educational research is an organized approach to asking, answering, and effectively reporting a question. Why Educational Research? Educators need to be consumers (and producers) of research. Creswell (2002) notes the following reasons, describing the various purposes of educational research: 1. Improve Practice Research can suggest ways of improving practice that have been verified with many applications and by many different types of people, which is difficult for practitioners. 2. Add to Knowledge Research can add to what we know about how people learn and what we can do help facilitate the learning process. 3. Address Gaps in Knowledge Research can address areas in which little is know, like perhaps the effects of online versus traditional classroom learning. 4. Expand Knowledge Research can allow us to extend what we know in ways we never conceived. 5. Replicate Knowledge Research can act as a test to verify previous findings. 6. Add Voices of Individuals to Knowledge Research can add an important......

Words: 443 - Pages: 2

Data File 5

...Data File 5 Chapter Nine Show all work Problem 1) A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance. Problem 2) At one school, the average amount of time that tenth-graders spend watching television each week is 18.4 hours. The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching television per week has decreased. Formulate the null and alternative hypotheses for the study described. Problem 3) A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis? Problem 4) A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis? Problem 5) What is the difference between an Type I and a Type II error? Provide an example of both. Chapter 10 Show all work Problem 1) Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a scale from 1 to 10, with 1......

Words: 1350 - Pages: 6

Educational Statistic

...Scientific Research and Essay Vol.4 (11), pp. 1260-1270, November, 2009 Available online at http://www.academicjournals.org/SRE ISSN 1992-2248 © 2009 Academic Journals Full Length Research Paper The role of science and technology education at network age population for sustainable development of Bangladesh through human resource advancement Gazi Mahabubul Alam Faculty of Education, University of Malaya, 50603 Kuala Lumpur, Malaysia. E-mail: gazi.alam@um.edu.my. Tel: +6037967 5077. Fax + 603-7967 5010. Accepted 25 September, 2009 Education is supposed to play a vital role for the development of a nation. Many countries made progression through education. Nevertheless, some of them also failed to retain the development achieved since these countries failed to supply required skilled workforce for emerging economics caused by globalization and rapid change of economic pattern. This now forces policymakers to prioritize the production of skilled manpower that can contribute for sustainable development. The countries that achieved sustainable development have given a high priority to science and technology education in formulating education policy. Bangladesh has no more alternatives in order to gain development, except properly utilizing its population. Bangladesh’s economy and human development could have grown faster than its actual progression in the last 25 years (that is, since independence in 1971), if it had earlier taken substantial steps in educational......

Words: 8860 - Pages: 36

Data File

...Data File 5 Chapter Nine Show all work Problem 1) A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO is less than 1 in every one thousand. State the null hypothesis and the alternative hypothesis for a test of significance. Problem 2) At one school, the average amount of time that tenth-graders spend watching television each week is 18.4 hours. The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching television per week has decreased. Formulate the null and alternative hypotheses for the study described. Problem 3) A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis? Problem 4) A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis? Problem 5) What is the difference between an Type I and a Type II error? Provide an example of both. Chapter 10 Show all work Problem 1) Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two 30-second segments from “The Collection from the Best of Classical Music.” After listening to a segment, the students rated it on a scale from 1 to 10, with 1......

Words: 1350 - Pages: 6

Data File 1

...Date File 1 Chapter One 1) Determine whether the evaluated group is a population or a sample a) Based on a randomly selected group of 500 patients with high cholesterol, it was found that 67% have heart disease. Is this a population or a sample; explain your answer. The randomly selected group of 500 patients with high cholesterol is a population. 67% of that population has heart disease. It is considered a population because it is the entire group of patients that in which we are interested, and desire to draw a conclusion on heart health. The blood sample drawn to determine high cholesterol might be a sample under this study. b) An investigation of 150 randomly selected local restaurants concluded that 42% of local restaurants have serious health code violations. Is this a population or a sample; explain your answer. This is also a population. A population is an entire collection of people, animal, plants, or things from which we want to draw a conclusion. In this case, the things (restaurants) are the population which is being studied for health code violations. Scores on inspections, and other gathered data, may be considered a sample based on the tests. 2) Determine whether the given value is a statistic or a parameter. a) A researcher determines that 42.7% of all downtown office buildings have ventilation problems. Is this a statistic or a parameter; explain your answer. This is a parameter. I am fairly certain the researcher did not count......

Words: 294 - Pages: 2

Educational Research

...experts. One group of theorists argues that language input merely triggers grammatical knowledge that is already genetically available.2 The opposition argues that grammatical knowledge results from the way the human mind analyzes and organizes information and is not innate.3 This debate reflects fundamentally different beliefs about human development and is not likely to be resolved. However, there are at least two areas in which there is a substantial consensus that can guide educators and policy-makers: (a) the predictability of the course of language acquisition; and (b) its multi-determinate nature. Encyclopedia on Early Childhood Development ©2005 Centre of Excellence for Early Childhood Development Johnston J 1 LANGUAGE DEVELOPMENT AND LITERACY Research Results Predictable language sequences In broad strokes, the observable “facts” of language development are not in dispute. Most children begin speaking during their second year and by age two are likely to know at least 50 words and to be combining them in short phrases.4 Once vocabulary size reaches about 200 words, the rate of word learning increases dramatically and grammatical function words such as articles and prepositions begin to appear with some consistency.5 During the preschool years, sentence patterns become increasingly complex and vocabulary diversifies to include relational terms that express notions of size, location, quantity and time.6 By the age of four to six or so, most children have acquired......

Words: 2177 - Pages: 9

Edu 671 Week 1 Assignment Trends in Educational Action Research

...EDU 671 Week 1 Assignment Trends in Educational Action Research To Buy This material Click below link http://www.uoptutors.com/edu-671-ash/edu-671-week-1-assignment-trends-in-educational-action-research Instructions: For this assignment, you will create a document that includes both the Early Action Research Plan and criteria for your area of focus. The plan you share is the same one posted in the Early Action Research Ideas discussion from this week. Please be sure to consider the feedback you received from peers and your instructor and make necessary changes before including this plan in your assignment submission. For the criteria part of the assignment, consider what you read in “Themes in Education: Action Research” and “Current Trends in Education.” What topics did you see and read about that lead you toward clarifying a general idea and establishing an area of focus for research? Please refer to the “Research in Action Checklist Three – One” (Mills, 2014, p. 44) to establish criteria for your area of focus. Note that writing in the first-person voice during the criteria section of this assignment is acceptable.   Content The assignment needs to include the following areas of content.  •    Plan – Area of Focus (1 point): In no more than two paragraphs, describe your early idea of what the purpose of your study may be. •    Plan – Explanation of Problem (1 point): In no more than two paragraphs, explain a statement of the problem or situation that led to......

Words: 587 - Pages: 3

Educational Research

... The importance of research for education's future Education blog: Professor Kit Field discusses the importance of impartial research to improve education standards and the quality of teaching. Pupils-hands-up---PA 1 Comments . As the Dean of a School of Education, I wanted to take this opportunity to explain why I think research is an important component of education studies and teacher development writes Professor Kit Field. Research is not always a concept that practitioners, managers and policy makers respect. Too often it is seen as an academic activity conducted by others – to the profession, not with the profession. But I believe it should be respected. In fact I’d say education professionals are always learning, finding out things, analysing information, adapting their behaviour according to information received, looking to improve and adapting to modern demands. All of this constitutes research - whether professionals want to call it that or not. Let’s briefly imagine the world of education without research: 1. On what would the learning and teaching experience be based without underpinning research? If education is not based upon research and evidence, then it runs the risk of being based upon one or more of the following: •Dogma •Theory •Ideology •Convenience •Prejudice Allow me to unpack these: •Education is a political football and can be used for propaganda and political purposes. I believe that there is a moral dimension to the profession – and to......

Words: 905 - Pages: 4

Edu 671 Week 1 Assignment Trends in Educational Action Research

...EDU 671 Week 1 Assignment Trends in Educational Action Research Click Link Below To Buy: http://hwcampus.com/shop/edu-671-week-1-assignment/ 1. Trends in Educational Action Research. Due by Day 7. For this assignment, you will create a document that includes both the Early Action Research Plan and criteria for your area of focus. The plan you share is the same one posted in the Early Action Research Ideas discussion from this week. Please be sure to consider the feedback you received from peers and your instructor and make necessary changes before including this plan in your assignment submission. For the criteria part of the assignment, consider what you read in "Themes in Education: Action Research" and “Current Trends in Education.” What topics did you see and read about that lead you toward clarifying a general idea and establishing an area of focus for research? Please refer to the “Research in Action Checklist Three – One” (Mills, 2014, p. 44) to establish criteria for your area of focus. Note that writing in the first-person voice during the criteria section of this assignment is acceptable. Content The assignment needs to include the following areas of content. • Plan – Area of Focus (1 point): In no more than two paragraphs, describe your early idea of what the purpose of your study may be. • Plan – Explanation of Problem (1 point): In no more than two paragraphs, explain a statement of the problem or situation that led to this interest or why you......

Words: 623 - Pages: 3

slicer1967 | UFO Ultramaiden Valkyrie | 玻璃花