MODULE 8: NONPARAMETRIC TESTS AND CHI-
SQUARE ANALYSIS
__ tests make assumptions about population parameters and the data is assumed
normally distributed, it is performed on numerical continuous or ratio data. - Answer -
Parametric tests
___ tests make no assumptions about population parameters and uses nominal/ordinal
data. - Answer -Nonparametric
___ data is ranked data - Answer -ordinal
___ data is categorical data - Answer -nominal
The corresponding parametric-nonparametric test for paired sample test is ___ test -
Answer -Wilcoxon Test
What are the null and alternative hypotheses for a test for independence? - Answer -
Ho: There is no relationship between the two variables
Ha: There is a relationship between the two variables.
How do you calculate df for test for independence? - Answer -df = (k1-1)(k2-1)
How do you calculate expected frequency for test for independence? - Answer -
Calculate total for rows, columns, and all (n).
E = (row total)(column total)/n -- calculate for each individual row/column. For two
variables with two categories, this would equal 4 E values.
The corresponding parametric-nonparametric test for Pearson's r is ___ test - Answer -
Spearman's rho
___ compares observed frequencies to expected frequencies. Provides statistical
indicator for the statistical significance of the difference. - Answer -Chi-square
A chi-square critical region is always __ skewed - Answer -right-skewed
Determining df for chi square goodness of fit test - Answer -k-1 where k is the number
of categories
4 assumptions made about data used in chi-square analysis - Answer -1. Data is
reported in frequencies
2. Each participant can only be a member of one category. Repeated measures are not
possible
