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Unformatted text preview: 15: CHISQUARED TESTS MULTIPLE CHOICE QUESTIONS In the following multiplechoice questions, please circle the correct answer. 1. Which statistical technique is appropriate when we describe a single population of qualitative data with exactly two categories? a. ztest of a population proportion b. The chisquared test of a multinomial experiment c. The chisquared test of a contingency table d. Both a and b e. Both b and c ANSWER: d 2. If we want to conduct a twotail test of a population proportion, we can employ: a. ztest of a population proportion b. the chisquared test of a binomial experiment since 2 2 χ = z c. the chisquared test of a contingency table d. Both a and b e. Both b and c ANSWER: d 3. Which statistical technique is appropriate when we wish to analyze the relationship between two qualitative variables with two or more categories? a. The chisquared test of a multinomial experiment b. The chisquared test of a contingency table c. The ttest of the difference between two means d. Both a and b e. Both b and c ANSWER: b 4. If we want to conduct a onetail test of a population proportion, we can employ: a. ztest of a population proportion b. the chisquared test of a binomial experiment since 2 2 χ = z c. the chisquared test of a contingency table d. Both a and b e. Both b and c ChiSquared Tests ANSWER: a 5. In a goodnessoffit test, suppose that the value of the test statistic is 13.08 and df = 6. At the 5% significance level, the null hypothesis is a. rejected and pvalue for the test is smaller than 0.05 b. not rejected, and pvalue for the test is greater than 0.05 c. rejected, and pvalue for the test is greater than 0.05 d. not rejected, and pvalue for the test is smaller than 0.05 ANSWER: a 6. In a goodnessoffit test, suppose that a sample showed that the observed frequency i f and expected frequency i e were equal for each cell i . Then, the null hypothesis is a. rejected at = α 0.05 but is not rejected at = α 0.025 b. not rejected at = α 0.05 but is rejected at = α 0.025 c. rejected at any level α d. not rejected at any α level ANSWER: d 7. The president of a state university collected data from students concerning building a new library, and classified the responses into different categories (strongly agree, agree, undecided, disagree, strongly disagree) and according to whether the student was male or female. To determine whether the data provide sufficient evidence to indicate that the responses depend upon gender, the most appropriate test is: a. chisquared goodnessoffit test b. chisquared test of a contingency table (test of independence)...
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 Fall '10
 huang
 researcher, AirTrain Newark

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