EXAM 3 Alice Cline PSY325: Statistics for the Behavioral and Social Sciences Instructor Jeral Kirwan April 7‚ 2014 INTRODUCTION In 2012‚ the presidential election was in the spotlight as a result of power statistics when the founder of the FiveThirtyEight blog Nate Silver; prophesized the results of 50 states by using a statistical model of polling information. Nate Silver then wrote his best-selling book stressing the importance of statistical thinking (Silver 2012). His book also became famous
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How could graphics and/or statistics be used to misrepresent data? Where have you seen this done? Statistics‚ graphics‚ and database are used in medical field to approve‚ prove‚ or disapprove theories‚ analysis‚ and interpretation of ailments‚ medication and it’s impact‚ and treatment and it’s effectiveness. However‚ these data can be easily misinterpreted when and where there is a vested interest. Individual opinions are generalized without considering whole aspects of the issue‚ thus forming a
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DS BST 322 Independent Project Background of the study: The data in the dataset comes from a longitudinal study of low-income women in four urban communities. In the original study‚ extensive information was collected in 1999 (Wave 1) and 2001 (Wave 2) from about 4‚000 women. A major purpose of the study was to understand the life trajectories of these women and their children during a period of major changes to social policies affecting poor people in the United States. The sample
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most important terms Understand the facts about least-squares regression (pgs. 132 – 134) Understand the cautions about correlation and regression (pgs. 142 – 146) Important terms to understand: Preface and Chapter 1 Definition of statistics Individuals Categorical vs. quantitative variables Distribution The appropriate use of pie charts‚ bar charts‚ histograms‚
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Economics 141 (Intro to Econometrics) Professor Yang Spring 2001 Answers to Midterm Test No. 1 1. Consider a regression model of relating Y (the dependent variable) to X (the independent variable) Yi = (0 + (1Xi+ (i where (i is the stochastic or error term. Suppose that the estimated regression equation is stated as Yi = (0 + (1Xi and ei is the residual error term. A. What is ei and define it precisely. Explain how it is related to (i. ei is the residual
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Question: Due to financial hardship‚ the Nyke shoe company feels they only need to make one size of shoes‚ regardless of gender or height. They have collected data on gender‚ shoe size‚ and height and have asked you to tell them if they can change their business model to include only one size of shoes – regardless of height or gender of the wearer. In no more 5-10 pages (including figures)‚ explain your recommendations‚ using statistical evidence to support your findings. The data found are below:
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“ Statistics should be interpreted with caution as they can be misleading; they can both lie and tell the truth” Statistics are being used everyday to describe things in working and studying areas to show the productivity of the results they are hoping for. Therefore‚ people observe and notice alternative objects the world around. Throughout this fact‚ similarities and differences are such features that could endanger or turned out as advantages. This is called statistics. Explanations
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Chapter 2: Descriptive Statistics CHAPTER 2: Descriptive Statistics 2.3 [LO 1] 28 2007 #1 28 71‚273.93 58‚069‚987.70 7‚620.37 59490 87970 28480 Distribution is skewed right. Descriptive statistics count mean sample variance sample standard deviation minimum maximum range Stem and Leaf plot for stem unit = leaf unit = Frequency 2 9 13 4 28 #1 10000 1000 Stem 5 6 7 8 Leaf 99 123446677 0000112444447 1377 Distribution is more normally shaped in 2007. 2.5 [LO 2] a. We have 2
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STA-201: PRINCIPLES OF STATISTICS Final Project You are required to complete a final project. Please consult the Course Calendar for the due date. PROJECT DESCRIPTION Statistics is about more than calculations. It is about turning data into information and using this information to understand the population. A statistician will be asked to help solve real-world problems by designing a study‚ collecting data‚ analyzing the data‚ and writing up the results. As a final project‚ you will
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The History of statistics can be said to start around 1749 although‚ over time‚ there have been changes to the interpretation of the word statistics. In early times‚ the meaning was restricted to information about states. This was later extended to include all collections of information of all types‚ and later still it was extended to include the analysis and interpretation of such data. In modern terms‚ "statistics" means both sets of collected information‚ as in national accounts and temperature
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