Statistics for The Behavioral Sciences (MindTap Course List)
10th Edition
ISBN: 9781305504912
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Textbook Question
Chapter 17, Problem 1P
l. Parametric tests (such as t or ANOVA) differ from nonparametric tests (such as chi-square) primarily in terms of the assumption they require and the data they use. Explain the differences.
Expert Solution & Answer
To determine
The differences between parametric and non-parametric tests.
Answer to Problem 1P
Solution:
Non Parametric tests | Parametric tests |
No information about the population is available. | Information about the population is completely known. |
No assumptions are made regarding the population. | Specific assumptions are made regarding the population. |
The null hypothesis is free from parameters. | The null hypothesis is made on parameters of population distribution. |
Explanation of Solution
The basic difference between parametric and non-parametric tests are the assumptions associated with non-parametric tests. They are:
- The sample observations are independent.
- The variable under study is continuous.
- The probability density function is continuous.
- Lower order moments exist.
- The non-parametric tests do not require the population to have a normal distribution.
Conclusion:
These are the assumptions for non-parametric tests which are fewer and much weaker than those associated with parametric tests.
Justification:
This is why the non-parametric tests can be performed on data measured on any scale.
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Parametric tests (such as t-tests or ANOVAs) differ from nonparametric tests (such as chi-square) primarily in terms of the assumptions they require and the data they use. Explain these differences.
Chapter 17 Solutions
Statistics for The Behavioral Sciences (MindTap Course List)
Ch. 17 - l. Parametric tests (such as t or ANOVA) differ...Ch. 17 - The student population at the state college...Ch. 17 - 3.A developmental psychologist would like to deter...Ch. 17 - Data from the Motor Vehicle Department indicate...Ch. 17 - Research has demonstrated that people tend to be...Ch. 17 - Suppose that the researcher fromthe previous...Ch. 17 - A professor in the psychology department would...Ch. 17 - Automobile insurance is much more expensive for...Ch. 17 - The color red is often associated with anger and...Ch. 17 - Prob. 10P
Ch. 17 - Prob. 11PCh. 17 - 12. Many businesses use some type of customer...Ch. 17 - In a classic study, Loftus and Palmer (1974)...Ch. 17 - In a study investigating freshman weight gain, the...Ch. 17 - Research results suggest that IQ scores for boys...Ch. 17 - 16. Gender difference in dream content are wen...Ch. 17 - 17. In a study similar to one conducted by Fallon...Ch. 17 - 18. A recent study indicate that people tend to...Ch. 17 - 19. Research indicates that people who volunteer...Ch. 17 - Cialdini, Reno, andKallgre,n (11990) examined how...Ch. 17 - Although the phenomenon is not well understood, it...Ch. 17 - In the Preview for this chapter we presented a...Ch. 17 - Research has demonstrated strong gender...
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