Two Variables Are Negatively Correlated If

question 8

Multiple Choice

Two variables are negatively correlated if:

• A) they move in the same direction.
• B) they move in the opposite direction.
• C) their movements tend to be unrelated.
• D) one is simply a multiple of the other.

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Definitions:

Kruskal-Wallis Test

A nonparametric statistical test that assesses whether there are statistically significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable.

Crawling Ages

The typical age range during which infants develop and start to move on their hands and knees.

Alternative Hypothesis

The hypothesis that proposes a difference or effect contrary to the null hypothesis in statistical testing.

Wilcoxon Signed Rank Test

A non-parametric method for comparing two related samples, matched pairs, or repeated measurements on the same sample to evaluate if their population mean ranks are different.