Ap Statistics-Adams Chapter 10 Review With Answers - Woodstown-Pilesgrove Regional School District
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5Chapter 10 Review
Name: ____________________________________
AP Statistics-Adams
Period: ______ Date: _______________________
Multiple Choice
χ
2
1. A fair die is rolled 60 times, and the value of
is computed using expected counts of 10 for
χ
2
each face. If this is repeated many times, the shape of the distribution of the values of
should be
A. approximately normal.
B. skewed right.
C. skewed left.
D. uniform.
E. bimodal.
2. The major difference between the chi-square test of homogeneity and the chi-square test of
independence is the
A. number of categories.
B. sample size.
C. method of sampling.
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2
D. size of the
statistic.
E. number of degrees of freedom.
3. Which of these statements is not true?
A. A chi-square test of independence that is statistically significant shows a cause-and-effect
relationship.
B. A segmented bar chart is useful in observing when two variables might be associated.
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2
C. As the number of categories increases, the
distribution approaches the normal
distribution.
D. The chi-square tests involve categorical variables.
E. The chi-square goodness-of-fit test is an extension of the z-test to more than two
categories.
4. The null hypothesis is rejected in a chi-square test of significance when
A. the test conditions are satisfied.
α
B. the P-value is larger than
, the level of significance.
α
− .
C. the P-value is larger than 1
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2
D. the
statistic is smaller than the critical value for the given level of significance.
χ
2
E. the
statistic is larger than the critical value for the given level of significance.
5. Which test is appropriate for determining whether a random-digit generator is truly random in
terms of the proportions of each digit it produces?
A. the chi-square goodness-of-fit test
B. the chi-square test of homogeneity
C. the chi-square test of independence
D. Either B or C is appropriate.
E. None of these tests is appropriate.
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