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

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.

________ is a measure of the strength of association used in tables larger than 2 × 2.

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

Mean, median, and mode are measures of variability.

The two-tailed test is more powerful than the one-tailed test.

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

The ________ is the value that occurs most frequently.

The ________ is the most appropriate measure of central tendency for interval or ratio data.

If a variable is measured on a nominal scale, the median should be used.

The difference between the mean and an observed value is called the deviation from the mean.

The introduction of a third variable in cross-tabulation can result in which of the following possibilities?

For a given level of α, increasing the sample size will decrease β, thereby increasing the power of the test.

The alternative hypothesis: the percentage of Internet users who use the Internet for shopping is greater than .40, is a ________.

As a general rule to follow to determine which of the different measures of location to use, if the variable is measured on a nominal scale, ________ is the appropriate measure of central tendency that should be used.

The degrees of freedom for the t statistic to test hypotheses about one mean are ________.

The F test of sample variance may be performed if it is not known whether the two populations have equal variance. In this case the hypotheses are ________.

Which of the following statements is not true about parametric tests?

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

The mode represents the highest peak of the distribution.

Paired samples are two samples that are not experimentally related.