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Quiz 12

Nonparametric statistics

1. Which condition is not

required to perform a nonparametric test?

a) random sampling of population

b) data are normally distributed

c)

2. Which condition is not

necessary before conducting an

nonparametric test?

a) data must be normally distributed

or nearly

b) groups must be independent

c) data must come from random

sampling

3. What is the significant correlation

for a Spearman Rank r for a=0.05

and 20 pairs of values?

a) 0.438

b) 0.450

c) 0.462

d) 0.377

4. Which is the correct test to use when

you want to compare three groups of

different participants and the data are not

normally distributed data?

a) Kruskall-Wallis

b) t-test for independent groups

c) analysis of variance

d) test of independence

5.

a) area under curve is equal to one

b) distribution is symmetrical

c) is skewed positively

d) it is asymptotic to the right

6.

a) there is at least one significantly

different group

b) all groups are significantly different

c) all groups have equal means

7. Which post hoc test is the

most conservative and has the

least power?

a) Scheffé

b) Tukey HSD

c) Bonferroni

d) Dunnett’s multiple range

8. Given the following SPSS output

which is the correct conclusion?

a) E different from VG

b) no differences

c) E different from G

d) VG different from G