Exam 15: Frequency Distribution, cross-Tabulation, and Hypothesis Testing

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________ is a measure of the relative peakedness or flatness of the curve defined by the frequency distribution.

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A mathematical distribution whose objective is to obtain a count of the number of responses associated with different values of one variable and to express these counts in percentage terms is a(n)________.

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________ is a test statistic that measures the association between two ordinal-level variables.It makes an adjustment for ties and is most appropriate when the table of variable is square.

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If the calculated value of the test statistic is less than the critical value of the test statistic (TS CR),the null hypothesis is rejected.

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Nonparametric tests are used when the independent variables are nonmetric.

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The tendency of the deviations from the mean to be larger in one direction than in the other is called ________.

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The test statistic used in the Kolmogorov-Smirnov one-sample test is ________.

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Tau b,tau c,and gamma are available to measure association between two ________-level variables.

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The test statistic measures how close the sample has come to the null hypothesis and often follows a well-known distribution,such as the normal,t,or chi-square distribution.

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If the population standard deviation was assumed to be known,rather than estimated from the sample,a ________ would be appropriate rather than a ________.

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________ are hypothesis testing procedures that assume that the variables of interest are measured on at least an interval scale.

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In hypothesis testing,the observations are paired so that the two sets of observations relate to the same respondents.

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The binomial test is a test of randomness for a dichotomous variable.

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The ________ is used to test the statistical significance of the observed association in cross-tabulation.

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Define the null and alternative hypotheses.Discuss the relationship between the two hypotheses.

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The mean is sensitive to extremely small or extremely large values (outliers).

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A Kolmogorov-Smirnov one-sample test was conducted.The largest absolute difference between the observed and normal distribution was K = 0.222.The sample size was only 30 therefore,the approximate formula was used and the critical value for K was 0.248.Because the calculated value of K is ________ than the critical value,the null hypothesis ________ be rejected.

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A statistical technique that describes two or more variables simultaneously and results in tables that reflect the joint distribution of two or more variables that have a limited number of categories or distinct values is a ________.

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The tendency of the deviations from the mean to be larger in one direction than in the other is called skewness.

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The ________ tests the goodness of fit of the observed number of observations in each category to the number expected under a specified binomial distribution.

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