Question

1. Nonparametric tests have _________ power than equivalent parametric tests, and are considered parameter-free because the inferential test is ________.

a. less; based on fewer degrees of freedom

b. less; not based on sample means

c. less; not based on skewed distributions

d. more; based on estimated population means

e. more; not susceptible to sampling error

2. A spearman rank order correlation is appropriate for _________ data because a(n) __________ cannot be computed.

a. ranked; meaningful order

b. ordered; standard deviation

c. ordinal; meaningful mean

d. nonparametric; population parameter

please dont guess! only answer if you know it! thanks :)

Answer 1

Sol:

1.

Option " b" is correct.

b. less; not based on sample means.

Nonparametric tests have less power than equivalent parametric tests.nonparametric analyses provide an advantage because they assess the median rather than the mean. The mean is not always the better measure of central tendency for a sample.

2.

Option " d" is correct.

d. nonparametric; population parameter

A Spearman rank order correlation is appropriate for a non parametric data because population parameter cannot be computed.

The spearman correlation measures the strength and direction of the relation between the variables under consideration.

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