Question
Please help me answer these questions for these scenario: Scenario 1: A local police expert claims to be able to judge an individual's personality on
Please help me answer these questions for these scenario:
Scenario 1:
A local police expert claims to be able to judge an individual's personality on the basis of his or her handwriting. To test this claim, 10 samples of handwriting are obtained: 5 from prisoners convicted of violent crimes, and 5 from psychology majors at a local college. The expert ranks the handwriting samples from 1st to 10th, with 1st place representing the most anti-social personality. Is there a discernable difference between the handwriting styles of prisoners and the college students?
- Whether the test is measuring a relationship between two variables, or comparing measures of central tendency for one variable.if comparing measures of central tendency, is it a between or within subjects design?
- What scale is the data measured on (nominal, ordinal, interval, or ratio)?
- What is the appropriate test for analyzing the data? (Chi-square goodness of fit, Chi-square test of independence, Pearsonr, Spearman's rho, Independent groups t-test, Dependent groups t-test, Mann-Whitney U test, or Wilcoxon test)
Scenario 2:
A researcher is interested in the effect of a program to improve student spelling over an academic year. A group of 30 6th grade students is given a spelling test before starting the program in the fall, and then again after completion of the program in the spring. The percentage of words spelled correctly on each test is calculated. Upon completion of the study, the researcher discovers that there was a great deal more variability in test scores before the program than there was after the program (thus, there was not homogeneity of variance). Was the program effective at improving spelling?
- Whether the test is measuring a relationship between two variables, or comparing measures of central tendency for one variable.if comparing measures of central tendency, is it a between or within subjects design?
- What scale is the data measured on (nominal, ordinal, interval, or ratio)?
- What is the appropriate test for analyzing the data? (Chi-square goodness of fit, Chi-square test of independence, Pearsonr, Spearman's rho, Independent groups t-test, Dependent groups t-test, Mann-Whitney U test, or Wilcoxon test)
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