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

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Which statement is not related to statistics associated with cross-tabulation?

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The ________ is the value that occurs most frequently.

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When calculating the standard deviation,we divide by n-1 because the sample is drawn from a population and we are trying to determine how much the responses vary from the mean of the entire population.

(True/False)
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The first step in hypothesis testing is to select an appropriate statistical technique and the corresponding test statistic.

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The ________ is used as a measure of the strength of association in the special case of a table with two rows and two columns (a 2 × 2 table).

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The ________ test is a nonparametric test for examining differences in the location of two populations,based on paired observations,that compares only the signs of the differences between pairs of variables without taking into account the magnitude of the differences.

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A ________ is a test conducted by determining whether the order or sequence in which observations are obtained is random.

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The degrees of freedom for the t statistic to test the hypothesis about two independent samples is ________.

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Nonparametric tests are conducted in SPSS via the NONPARAMETRIC TESTS program.

(True/False)
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In determining the critical value of the test statistic,the area to the right of the critical value is either α or α/2.It is α for a one-tail test and α/2 for a two-tail test.

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A statistic that indicates the distribution's dispersion is a ________.

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In the parametric case of means for two independent samples,the hypotheses take which form?

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________ occurs when the sample results lead to the rejection of a null hypothesis that is in fact true.

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In a frequency distribution,two variables are considered at a time.

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The mode represents the highest peak of the distribution.

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In the Mann-Whitney U test,two samples are combined and the cases are ranked in order of increasing size.The test statistic,U,is computed as the number of times a score from sample 1 or group 1 follows a score from group 2.

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________ is a modified version of the phi correlation coefficient,Φ.

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If the probability associated with the calculated or observed value of the test statistic (TS CAL)is greater than the level of significance (α),the null hypothesis is rejected.

(True/False)
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The value obtained by summing all elements in a set and dividing by the number of elements is the ________.

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Lambda assumes that the variables are measured on an ordinal scale.

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