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Multiple Choice Quiz
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1
Which of the following is not one of the rules we should use to choose the proper significance test?
A)Is the measurement scale nominal, ratio, interval or ordinal?
B)Are the samples related or independent?
C)Does the test involve one sample, two samples or k samples?
D)Is the case one-tailed or two-tailed?
2
A one tailed test:
A)Is non directional
B)Cannot be used with the nominal distribution.
C)Can be used with the Chi-Square distribution because it is skewed
D)Is directional.
3
Which of the following tests can be used with nominal data?
A)Z-test
B)Chi squared test
C)Kruskal Wallis
D)A and B are correct.
E)B and C are correct.
F)A and C are correct.
4
One sample tests are used in which of the following situations?
A)Is there a difference between observed and expected proportions?
B)Is there a significant difference between some sample statistic and its population parameter?
C)Is it reasonable to conclude that a sample is drawn from a population with a specified distribution?
D)All the above.
E)A and C only.
5
Which of the following statements about the Chi-Square test is INCORRECT?
A)It is widely used as a non-parametric test for nominally scaled data.
B)It is used only when the population is viewed as only two classes, e.g. male - female.
C)It tests for significant differences between the observed and expected distributions.
D)Can also be used with k independent samples.
6
Which is the more correct statement?
A)Type II error occurs when one rejects a true hypothesis.
B)Type II error is also known as alpha error.
C)Type II error is measured by the portion of the original distribution which falls into the region of rejection.
D)Type II error depends upon the size of the alpha error we specify.
7
One-way analysis of variance (ANOVA)
A)compares the means of different groups.
B)tests whether the variance is significant.
C)employs the Z-value to check significance.
D)A and C are correct.
E)B and C are correct.
F)A, B and C are correct.
8
Parametric tests include
A)Z-tests
B)t-tests
C)ANOVA
D)All of the above
E)A and B are both correct.
9
A difference is statistically significant if
A)It represents more than random sampling error.
B)It makes a significant impact on dependent variables.
C)It exceeds the just noticeable differences.
D)All of the above
10
Which of the following are parametric tests that can be used for two independent samples?
A)Z-test.
B)T-test.
C)Chi-square test.
D)F-test.
E)Answers A and B only.
F)A, B, and D are correct.
G)A, B, C and D are correct.
11
Which of the following tests can be used for ordinal data?
A)Mann-Whitney U test
B)Rockall Wallis
C)Wilcox on matched-pairs test
D)All of the above.
E)A and B are correct.
F)B and C are correct.
G)A and C are correct.





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