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

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Question 71

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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) ________.

A) t distribution
B) distribution
C) frequency distribution
D) chi-square distribution

E) A) and D)
F) A) and B)

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Question 72

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Nonparametric tests are used when the independent variables are nonmetric.

A) True
B) False

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Question 73

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

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.

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 ________.

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

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

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.

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

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

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

________ 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.

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

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.

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

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

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

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

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

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