------o0o------ CHAPTER 14: CHI-SQUARE TESTING STATISTICS FOR BUSINESS TAs: Vo Vuong Van Anh‚ Le Phuoc Thien Thanh‚ and Le Nhat Ho December 21‚ 2013 TABLE OF CONTENTS • PART I: CHI-SQUARE TESTING FOR GOODNESS-OF-FIT. • PART II: CHI-SQUARE TESTING FOR NORMAL DISTRIBUTION. • PART III: CHI-SQUARE TESTING FOR INDEPENDENCE. December 2013 Powered by Vo Vuong Van Anh 2 1 12/21/2013 Hypothesis Testing Procedure for Chi-Square Testing 5 Steps to Perform an Chi-Square Testing STEP 01 State the null
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Name________________________________ Score________________ Due 05/07/2013 Each additional day late will cost you 4 points. SHOW ALL WORK AND DO BY HAND. YOU CAN CHECK ON CALCULATOR. 12. (20 points) A public opinion poll surveyed a simple random sample of voters. Respondents were classified by gender (male or female) and by voting preference (Republican‚ Democrat‚ or Independent). Results are shown below. | Voting Preferences | | Republican | Democrat
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created 3 principles as it relates to the laws of genetics. The 3 principles of Mendel’s laws of genetics are the law of dominance‚ the law of segregation and the law of independent assortment. The law of dominance stated that in a heterozygous condition‚ the dominant allele will dominate over another allele. This means that the dominant trait or phenotype will be present. The law of segregation states that for any trait or phenotype‚ the parent alleles will separate and only one allele from each
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THE CHI-SQUARE GOODNESS-OF-FIT TEST The chi-square goodness-of-fit test is used to analyze probabilities of multinomial distribution trials along a single dimension. For example‚ if the variable being studied is economic class with three possible outcomes of lower income class‚ middle income class‚ and upper income class‚ the single dimension is economic class and the three possible outcomes are the three classes. On each trial‚ one and only one of the outcomes can occur. In other words‚ a family
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Chi-Square Homogeneity Test The purpose of a chi-square homogeneity test is to compare the distributions of a variable of two or more populations. As a special case‚ it can be used to decide whether a difference exists among two or more population proportions. For a chi-square homogeneity test‚ the null hypothesis is that the distributions of the variable are the same for all the populations‚ and the alternative hypothesis is that the distributions of the variable are not all the same (i.e.‚ the
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Individual Paper #3: Non parametric and Chi-square distribution Brief Summary: I worked for a logistic company. My major responsibility was in charge of the storage and transportation of parts of cars between two areas‚ which are about 1400 miles apart. One of my jobs is collecting the goods from suppliers and arranging the trucks to deliver them. There are five truck drivers‚ and each of them is assigned to deliver on each weekday throughout a whole year. Before the delivery
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Chi-square tests 1. INTRODUCTION 1.1 χ2 distribution and its properties A chi-square (χ2) distribution is a set of density curves with each curve described by its degree of freedom (df). The distribution have the following properties: - Area under the curve = 1 - All χ2 values are positive i.e. the curve begins from 0 (except for df=1) increases to a peak and decreases towards 0 as its asymptote - The curve is skewed to the right‚ and as the degree of freedom increases‚ the
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IB Math Studies Spring 2013 Table of Contents: Introduction/Purpose……………………………………………………………..p.3 Data Collection Method……………………………………………………….....p. 3 - 4 Data Analysis: Chi-Squared Statistic Frequency Table…………………………………………………………p. 4 - 5 Contingency Table……………………………………………………….p. 5 – 6 Chi – Squared Statistic…………………………………………………...p. 7 Degrees of Freedom………………………………………………………p. 7 Critical Value……………………………………………………………..p. 7 – 8 Conclusion……………………………………………………………………
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Conditions under the Tsar Russia used to be ruled by the Tsars Before February 1917‚ Russia was ruled by the Tsars and the Royal Family were the Romanovs. The Tsarist system was an autocracy (ruled by one person). Tsar was ruled by decree‚ his word was law. USSR’s Population was very diverse(variety; very different ) Russia was a multi-national and multi religious state. Most of russias population was Russian but there were significant minorities including Ukrainians‚ Fins‚ Poles and Georgians
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The Chi-Square (x2) Goodness-of-Fit Test: What It Is and What It Does The chi-square (x2) goodness-of-fit test is used for comparing categorical information against what we would expect based on previous knowledge. As such‚ it tests what are called observed frequencies (the frequency with which participants fall into a category) against expected frequencies (the frequency expected in a category if the sample data represent the population). It is a non-directional test‚ meaning that the alternative
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