Question

True/False

___ Poisson regression is used when a count variable is regressed onto a set of continuous and/or categorical predictors.

___ Ranks are never considered preferable to the actual data.

___ When using a parametric test if two groups have identically skewed distributions with the same variance, then any differences would be due to differences in location.

___ A rank-based test may be considered a robust alternative because it is testing a null hypothesis similar in concept to the parametric null.

___ The most commonly used parametric procedures test differences in location because other distributional differences are assumed not to exist.

___ Data transformations can alter the fundamental nature of the data and the null hypothesis being tested, thus complicating interpretation.

Answer 1

1. True

2. False

3.True

When using a parametric test if two groups have identically skewed distributions with the same variance, then any differences would be due to differences in location.

4.True

A rank-based test may be considered a robust alternative because it is testing a null hypothesis similar in concept to the parametric null.

5.True

The most commonly used parametric procedures test differences in location because other distributional differences are assumed not to exist.

6.True

Data transformations can alter the fundamental nature of the data and the null hypothesis being tested, thus complicating interpretation.