APPLIED STAT.IN BUS.+ECONOMICS
6th Edition
ISBN: 9781259957598
Author: DOANE
Publisher: RENT MCG
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Chapter 16, Problem 6CR
a.
To determine
Identify the purpose of a Kruskal-Wallis test.
b.
To determine
Give the assumption needed for considering Kruskal-Wallis test as the test of c medians.
c.
To determine
Identify the type of parametric test that is analogous to Kruskal-Wallis test.
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What statistical test is most appropriate if you want to examine whether there is a difference in graduation rates (percentages) among home schooling, public schools, and private schools where you live? Assume the data does NOT meet the assumptions for a parametric test
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The Friedman's ANOVA by rank test is:
a parametric test.
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O an ad hoc test.
Oa post hoc test.
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Chapter 16 Solutions
APPLIED STAT.IN BUS.+ECONOMICS
Ch. 16.2 - Prob. 1SECh. 16.2 - Prob. 2SECh. 16.2 - Prob. 3SECh. 16.2 - Prob. 4SECh. 16.3 - A sample of 28 student scores on the chemistry...Ch. 16.3 - Prob. 6SECh. 16.4 - Prob. 7SECh. 16.4 - Prob. 8SECh. 16.5 - Prob. 9SECh. 16.5 - The results shown below are mean productivity...
Ch. 16.6 - Consumers are asked to rate the attractiveness of...Ch. 16.6 - Prob. 12SECh. 16.7 - Prob. 13SECh. 16.7 - Prob. 14SECh. 16 - Prob. 1CRCh. 16 - Prob. 2CRCh. 16 - Prob. 3CRCh. 16 - Prob. 4CRCh. 16 - Prob. 5CRCh. 16 - Prob. 6CRCh. 16 - Prob. 7CRCh. 16 - Prob. 8CRCh. 16 - Prob. 9CRCh. 16 - Prob. 10CRCh. 16 - (a) Why is a significant correlation not proof of...Ch. 16 - Prob. 15CECh. 16 - Prob. 16CECh. 16 - Prob. 17CECh. 16 - Prob. 18CECh. 16 - Prob. 19CECh. 16 - Instructions: In all exercises, you may use a...Ch. 16 - Prob. 21CECh. 16 - Prob. 22CECh. 16 - Prob. 23CECh. 16 - Prob. 24CECh. 16 - Prob. 25CECh. 16 - Instructions: In all exercises, you may use a...Ch. 16 - Prob. 27CECh. 16 - Instructions: In all exercises, you may use a...Ch. 16 - Prob. 29CECh. 16 - Prob. 30CECh. 16 - Prob. 31CECh. 16 - Prob. 32CECh. 16 - Prob. 33CECh. 16 - Prob. 34CECh. 16 - Instructions: In all exercises, you may use a...Ch. 16 - Prob. 36CECh. 16 - Prob. 37CE
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- TRUE OR FALSE. a. non-parametric tests are generally more efficient than parametric tests. b. When requirements of population distributions are satisfied, nonparametric tests are generally less efficient compared to their parametric counterparts.arrow_forwardWhat are characteristics of a t test?arrow_forwardTRUE OR FALSE. a. Stronger evidence is needed to reject the null hypothesis in a parametric test than its non-parametric counterpart. b. Non-parametric tests do not require a particular distribution.arrow_forward
- What determines whether we use the z-test or the t-test?arrow_forwardThe principal of an elementary school wanted to see if there are differences in the abilities of first, second, and third graders to render a three-dimensional image into a two- dimensional drawing (as judged by trained coders). All students were attending the same school, and data were collected during the same semester. What test I use? -Independent samples t test -ANOVA -Paired samples t test -Correlationarrow_forwardAssumptions of Parametric Test: (Normality of Data, homogeneity of variances, linearity, dependency)Which does not belong to the group?arrow_forward
- The non-parametric test for determining the difference between two populations based on paired samples is Kruskal Wallis test O Test for randomness O None of these O Mann-Whitney U test O Median test for randomness TOSHIBAarrow_forwardWhich of the following is not a reason to prefer a nonparametric test to a parametric test? A) Nonparametric tests can be used for ordinal data. B) Nonparametric C) Nonparametric D) Nonparametric tests are computationally more straightforward. tests are less influenced by outliers. tests are more powerful under conditions of normality.arrow_forwardWhich of the following is NOT a nonparametric test for ordinal data analysis? O Kruskal Wallis test O Wilcoxon Signed Rank test O Bonferroni LSD test O Mann-Whitney U testarrow_forward
- Standardized test scores For his Statistics class experi-ment, researcher J. Gilbert decided to study how parents’ income affects children’s performance on standardizedtests like the SAT. He proposed to collect informationfrom a random sample of test takers and examine therelationship between parental income and SAT score.a) Is this an experiment? If not, what kind of study is it?b) If there is relationship between parental incomeand SAT score, why can’t we conclude that differencesin score are caused by differences in parentalincome?arrow_forwardIllustrate the null hypothesis for a correlated t test?arrow_forwardDisadvantages of non-parametric tests include: a.For hypothesis testing not estimating effect size b.Degree of confidence may be too high c.May lack power (compared to parametric tests) d.A & Carrow_forward
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