Question

In order to test if there is a difference between means from two populations, which of the following assumptions are NOT required?

a. The dependent variable scores must be a continuous quantitative variable.
b. The scores in the populations are normally distributed.
c. Each value is sampled independently from each other value.
d. The two populations have similar means.

Answer 1

The assumption that is NOT required when testing for a difference between means from two populations is d. The two populations have similar means.

Step-by-step explanation:

The assumption that is NOT required when testing for a difference between means from two populations is d. The two populations have similar means.

When testing for a difference between means, the key assumptions are:

1. The dependent variable scores must be a continuous quantitative variable.
2. The scores in the populations are normally distributed.
3. Each value is sampled independently from each other value.

These assumptions ensure that the test is valid and the results are accurate.