SG 11 Flashcards
It is the nonparametric equivalent of the ANOVA.
K-W H T
In K-W H T, the basic idea is that if populations have the same ____, the average rank should be nearly the same for all samples.
central location
It uses ranks without regard to the population.
K-W H T
for more than 2 samples, an extension or variation of the Mann-Whitney U Test.
KRUSKAL-WALLIS H TEST
The ___ is not a test of equality but a test for medians
KW H Test
It does not assume that the underlying populations necessarily have a mean
The only assumption is that elements of the pop. can be ranked with respect to one another
KW H Test
used to test the equality of two or more population means by examining the variances of the samples
Analysis of Variance (ANOVA)
In ANOVA, variables are measured at _______
interval/ratio scale
In ANOVA, ____ are equal
pop. variances
ANOVA assumptions
Samples are independent and randomly selected
Variables are measured at interval/ratio scale
Populations are normally distributed
Population variances are equal
it cannot determine which differences are significantly different.
ANOVA
To test which among the groups are statistically different when the null hypothesis is rejected
Fisher’s Least Significant Difference Test
F-distribution is an ______distribution that has a minimum value of 0 but no maximum value
Asymmetric
Properties of F-distribution
Asymmetric distribution that has a minimum value of 0 but no maximum value
There is a different F distribution for each combination of the df of the numerator and denominator
The F distribution is more spread out when df is small
As df increases, the F-distribution becomes less dispersed
The F distribution is more spread out when df is ____
As df ___, the F-distribution becomes less dispersed
small
increases
