Coral Library

40 Statistics Multiple Choice Questions

$4.98

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

a. Non-parametric tests

b. Parametric tests (moderate, page 463)

c. Parallel tests

d. Regression tests

e. Interval tests

2. All of the following are types of tests of differences EXCEPT:

a. one sample.

b. two independent samples.

c. paired samples.

d. more than two samples.

e. unitary samples. (moderate, page 463)

3. Which of the following is the first step in hypothesis testing based on the t statistic?

a. Select the appropriate formula for the t statistic.

b. Take one or two samples and compute the mean.

c. Select a significance level α for testing.

d. Refer to statistical tables.

e. Formulate the null (H0) and the alternative (H1) hypotheses. (easy, page 464)

4. The critical value for a one-tailed z-test would be ______________.

a. either -1.96 or 1.96

b. either -4.0 or 4.0

c. either -1.25 or 1.25

d. either -1.71 or 1.71

e. either -1.65 or 1.65 (difficult, page 466)

5. The most popular parametric test is the ______________ conducted for examining hypotheses about means.

a. F-test

b. p-test

c. t-test (moderate, page 464)

d. z-test

e. parametric test

6. A univariate hypothesis test using the t distribution, which is used when the standard deviation is unknown and the sample size is small, is called the ______________.

a. t-test (moderate, page 464)

b. F-test

c. p-test

d. z-test

e. k-means test

7. According to the text, the ______________ can be conducted on the means of one sample or two samples of observations.

a. F-test

b. p-test

c. t-test (moderate, page 464)

d. z-test

e. k-means test

8. In the case of conducting the t-test on the means of two samples of observations, the samples can be ______________ or ______________.

a. independent; random

b. random; exclusive

c. exclusive; dependent

d. independent; paired (difficult, page 463)

e. set-up; breakdown

9. The ______________ is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known, and the population variance is estimated from the sample.

a. a statistic

b. p statistic

c. t statistic (moderate, page 464)

d. z statistic

e. bell statistic

10. ______________ tests provide inferences for making statements about the means of parent populations.

a. Non-parametric tests

b. Parametric tests (moderate, page 463)

c. Parallel tests

d. Regression tests

e. Parent population tests

11. A(n) ______________ is commonly used for the purpose of providing inferences for making statements about the means of parent populations.

a. F-test

b. p-test

c. t-test (moderate, page 464)

d. z-test

e. chi-square test

12. The t statistic is calculated by assuming that all of the following exists EXCEPT:

a. the variable is normally distributed.

b. the mean is known.

c. the population variance is estimated from the sample.

d. the sample size is large. (difficult, page 464)

e. c and d

13. The ______________ is a symmetric bell-shaped distribution that is useful for small sample testing.

a. F distribution

b. p distribution

c. t distribution (moderate, page 464)

d. z distribution

e. chi-square distribution

14. According to the text, the t distribution is similar to the ______________ in appearance.

a. parallel distribution

b. normal distribution (moderate, page 464)

c. vertical distribution

d. horizontal distribution

e. chi-square distribution

15. Which of the following is NOT an example of a statement that is about a single variable against a known or given standard?

a. The market share for the new product will exceed 15 percent.

b. The proportion of households with an Internet connection in the United States exceeds the proportion of those in Germany. (difficult, page 465)

c. At least 65 percent of customers will like the new package design.

d. The average monthly household expenditure on groceries exceeds $500.

e. The new service plan will be preferred by at least 70 per cent of the customers.

16. A _______________ is a univariate hypothesis test using the standard normal distribution.

a. F-test

b. p-test

c. t-test

d. z-test (moderate, page 466)

e. chi-square test

17. Two samples that are not experimentally related are called ______________.

a. independent samples (easy, page 468)

b. dependent samples

c. parallel samples

d. exclusive samples

e. non-experimental samples

18. According to the text, samples drawn randomly from different populations are termed ______________.

a. dependent samples

b. parallel samples

c. exclusive samples

d. independent samples (easy, page 468)

e. divergent samples

19. A(n) ______________ of sample variance may be performed if it is not known whether the two populations have equal variance.

a. p-test

b. F-test (moderate, page 469)

c. t-test

d. z-test

e. chi-square test

20. The ______________ is computed as the ratio of two sample variances.

a. F statistic (moderate, page 469)

b. p statistic

c. t statistic

d. z statistic

e. chi-square statistic

21. A frequency distribution that depends on two sets of degrees of freedom is called a(n) ______________.

a. p distribution

b. t distribution

c. F distribution (moderate, page 470)

d. z distribution

e. chi-square distribution

22. The two sets of degrees of freedom in which the F distribution depends on are the degrees of freedom in the ______________ and the degrees of freedom in the _______________.

a. sample; questionnaire

b. numerator; denominator (difficult, page 470)

c. variance; standard deviation

d. t-test; F-test

e. matrix; contingency table

23. In many marketing research applications, the observations for two groups are not selected from independent samples. Rather, the observations relate to ______________ in that the two sets of observations relate to the same respondents.

a. distributed samples

b. independent samples

c. paired samples (moderate, page 473)

d. random samples

e. divergent samples

24. The critical values for a two-tailed z-test would be ______________.

a. -1.65 and 1.65

b. -4.0 or 4.0

c. -1.25 or 1.25

d. -1.71 or 1.71

e. -1.96 and 1.96 (difficult, page 473)

25. Examples of hypotheses related to paired samples include all of the following EXCEPT:

a. Shoppers consider brand name to be more important than price while purchasing fashion clothing.

b. Households spend more money on pizza than they do on hamburgers.

c. The proportion of households who subscribe to a daily newspaper exceeds the proportion subscribing to magazines.

d. The new service plan will be preferred by at least 70 percent of the customers. (difficult, page 474)

e. The proportion of a bank's customers who have a checking account exceeds the proportion who have a savings account.

26. A test for differences in the means of paired samples is called the ______________.

a. paired samples t-test (moderate, page 474)

b. paired samples F-test

c. paired samples p-test

d. paired samples z-test

e. paired samples ratio test

27. Procedures for examining differences between more than two means are called ______________.

a. paired samples t-tests

b. analysis of variance (moderate, page 476)

c. factor analysis

d. distribution of variance

e. canonical correlation

28. ______________ is a statistical technique for examining the differences among means for two or more populations.

a. Paired samples t-tests

b. Factor analysis

c. Distribution of variance

d. Analysis of variance (moderate, page 476)

e. Discriminant analysis

29. In its simplest form, ANOVA must have a(n) ______________ that is metric.

a. independent variable

b. dependent variable (moderate, page 477)

c. insignificant variable

d. random variable

e. t-test

30. The categorical independent variables used in an analysis of variance are called ______________.

a. factors (moderate, page 477)

b. records

c. elements

d. variables

e. correlations

31. According to the text, the independent variables must be all ______________ to use an ANOVA.

a. metric

b. measured using an interval scale

c. nonmetric (moderate, page 477)

d. measured using a ratio scale

e. correlated

32. An ANOVA technique in which there is only one factor is called ______________.

a. one-way analysis of variance (moderate, page 477)

b. two-way analysis of variance

c. parallel analysis of variance

d. concurrent analysis of variance

e. unitary analysis of variance

33. ______________ involves only one categorical variable, or a single factor that defines the different samples or groups.

a. Two-way analysis of variance

b. Parallel analysis of variance

c. One-way analysis of variance (moderate, page 477)

d. Concurrent analysis of variance

e. Unitary analysis of variance

34. In ANOVA, a particular combination of factor levels or categories is called ______________ conditions.

a. significant

b. treatment (moderate, page 477)

c. dependent

d. standard

e. combinatory

35. In one-way ANOVA, separation of the variation observed in the dependent variable into the variation due to the independent variables plus the variation due to error is called ______________.

a. decomposition of the total variation (difficult, page 477)

b. predisposed total variation

c. total analysis of variation

d. significance of the overall effect

e. two-part variation

36. The sum of squares divided by the appropriate degrees of freedom is called the ______________.

a. F statistic

b. t statistic

c. p value

d. mean square (difficult, page 478)

e. residual

37. ______________ indicates that some differences exist between some of the treatment groups.

a. Decomposition of the total variation

b. Predisposed total variation

c. Total analysis of variation

d. Significance of the overall effect (difficult, page 479)

e. Divergent validity

38. Which would be the appropriate way to test differences in proportions for more than two samples?

a. t-test if variance is unknown

b. z-test

c. paired t-test

d. F-test for equality of variances

e. cross-tabulation procedure to conduct a chi-square test (difficult, page 480)

39. According to the text, hypotheses related to differences in population means if the population variance is unknown can be tested using the ______________.

a. F distribution

b. p distribution

c. t distribution (moderate, page 482)

d. z distribution

e. chi-square distribution

40. The null hypothesis of equal means is tested by a(n) ______________, which is the ratio of the mean square related to the independent variable to the mean square related to error.

a. F statistic (difficult, page 482)

b. p statistic

c. t statistic

d. z statistic

e. chi-square statistic

- SubjectStatistics
- TopicGeneral Statistics
- Difficulty LevelCollege/University
- Answer has attachmentsNo