Question 46

A variable with equal distances between score units which also has a true meaningful zero is:

Ordinal

Cardinal

Ratio

Nominal

Question 47

The difference between the highest and lowest score in a distribution is called:

Semi-quartile range

Range

Mean

Median

Question 48

A group of neonatal nurses wanted to know if there was a difference in mean heart rate between premature babies who were swaddled and babies who were not swaddled. Babies were randomly assigned to swaddling or no swaddling. Which test is most appropriate?

One sample t-test

ANCOVA

Independent t-test

Logistic regression

Question 49

A set of subjects, usually randomly sampled, selected to participate in a research study is called:

Population

Sample

Mode Group

Partial Selection

Question 50

Psych nurses wanted to evaluate the effect of three different treatments for anxiety - positive imagery, therapeutic touch, and medication on anxiety score (interval data) while controlling for the effect of length of stay. Which test is most appropriate?

ANOVA

ANCOVA

Independent t-test

Paired t-test