Which statistical technique is appropriate when we describe a single population of qualitative data with exactly two categories? The z-test of a population proportion. The chi-squared goodness-of-fit test. The chi-squared test of a contingency table. Both (a) and (b). Analysis: A. Incorrect. Both (a) and (b) are appropriate. B. Incorrect. Both (a) and (b) are appropriate. C. Incorrect. Both (a) and (b) are appropriate. D. Correct. Both (a) and (b) are appropriate. ANSWER: D Ref: Section 15.3 The chi-squared distribution is used in: a goodness-of-fit test. a test of a contingency table. describing a population having more than two categories. All of these choices are true. Analysis: A. Incorrect. All of these choices are true. B. Incorrect. All of these choices are true. C. Incorrect. All of these choices are true. D. Correct. All of these choices are true. ANSWER: D Ref: Section 15.3 Which statistical technique is appropriate when we compare two or more populations of qualitative data with two or more categories? The z-test of the difference between two proportions. The chi-squared goodness-of-fit test. The chi-squared test of a contingency table. Both (a) and (b). Analysis: A. Incorrect. The chi-squared test of a contingency table is appropriate. B. Incorrect. The chi-squared test of a contingency table is appropriate. C. Correct. The chi-squared test of a contingency table is appropriate. D. Incorrect. The chi-squared test of a contingency table is appropriate. ANSWER: C Ref: Section 15.3 Which of the following tests is used to analyze nominal data? The test for one proportion, or difference of two proportions, . z p, The chi-squared goodness-of-fitness test. The chi-squared test of a contingency table. All of these choices are true.
Which statistical technique is appropriate when we describe a single population of qualitative data with exactly two categories? The z-test of a population proportion. The chi-squared goodness-of-fit test. The chi-squared test of a contingency table. Both (a) and (b). Analysis: A. Incorrect. Both (a) and (b) are appropriate. B. Incorrect. Both (a) and (b) are appropriate. C. Incorrect. Both (a) and (b) are appropriate. D. Correct. Both (a) and (b) are appropriate. ANSWER: D Ref: Section 15.3 The chi-squared distribution is used in: a goodness-of-fit test. a test of a contingency table. describing a population having more than two categories. All of these choices are true. Analysis: A. Incorrect. All of these choices are true. B. Incorrect. All of these choices are true. C. Incorrect. All of these choices are true. D. Correct. All of these choices are true. ANSWER: D Ref: Section 15.3 Which statistical technique is appropriate when we compare two or more populations of qualitative data with two or more categories? The z-test of the difference between two proportions. The chi-squared goodness-of-fit test. The chi-squared test of a contingency table. Both (a) and (b). Analysis: A. Incorrect. The chi-squared test of a contingency table is appropriate. B. Incorrect. The chi-squared test of a contingency table is appropriate. C. Correct. The chi-squared test of a contingency table is appropriate. D. Incorrect. The chi-squared test of a contingency table is appropriate. ANSWER: C Ref: Section 15.3 Which of the following tests is used to analyze nominal data? The z test for one proportion, p, or difference of two proportions, . The chi-squared goodness-of-fitness test. The chi-squared test of a contingency table. All of these choices are true.
0538479825_312307.docx