Exam 16: Non-Parametrics Revisited: the Ordinal Case

If ordinal data were obtained from a four-group, between-subjects design, then the appropriate test would be the

For a given sample size, the more powerful a test is, the more it is likely to produce

For questions below, use the following A researcher used a three, matched-subjects experimental design, and establishes the following data: Scores Ranked by Rows Group 1 Group2 Group 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 -Should Ho be rejected ?

Ordinal data may never be skewed.

If ordinal data were obtained from a one-group, repeated-measures design, then the appropriate test would be the

The ordinal test for assessing the difference between three or more independent samples, is the

For questions below, use the following: A researcher wishes to find out if a speed-reading course increases reading speed. Sixteen subjects were randomly selected from the adult population and then randomly divided into two groups. Group A was given a speed-reading course, and then, because the interval scores were badly skewed, each subject was ranked according to reading speed. Their ranks were 1, 3, 4, 6, 8, 9, 10, 15. Group B received no training, and their ranks on the same test were 2, 5, 7, 11, 12, 13, 14, 16. -Should Ho be rejected?

All non-parametric tests demand

For questions below, use the following: A researcher sets up a three-group, between-subjects design with random assignment of all subjects. Because the interval measures on the dependent variable are badly skewed, the measures are rank-ordered. The data follow: Group 1 Group 2 Group 3 1 3 5 2 4 9 6 8 13 7 12 16 10 14 17 11 15 18 -Indicate the critical, tabled value at .01.

The Pearson r is to the Spearman rs , as the

If the calculated value of zu were 3.15 and the critical, tabled value were 1.96, then Ho would be

Under which of the following conditions does an increase in beta lead to an increase in power?

Compared to the Pearson r, the Spearman r is a

The Wilcoxon T test is the ordinal equivalent of which interval test?

The Mann-Whitney U is the ordinal equivalent of which interval test?

For questions below, use the following: A researcher sets up a one-group, repeated-measures experimental design. Because the original, interval measures were badly skewed the data were converted into ordinal form. Subject \# Pre-Rank Post-Rank 1 1 1 2 3 2 3 2 7 4 5 3 5 7 4 6 6 8 7 8 9 8 10 5 9 9 6 10 4 10 -Which statistical test should be used?

The ordinal T for small samples only rejects null when the obtained value is equal to or less then the tabled value.

In order to calculate an ordinal test of significance, the following must be true

For questions below, use the following A researcher used a three, matched-subjects experimental design, and establishes the following data: Scores Ranked by Rows Group 1 Group2 Group 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 -Indicate the number of degrees of freedom.

Non-parametric tests may never be used on data from post-facto research.