The Period of the Ice Age Known as the Pleistocene

question 28

Multiple Choice

The period of the Ice Age known as the Pleistocene ended about:

• A) 25,000 years ago.
• B) 100,000 years ago.
• C) 10,000 years ago.
• D) 1.5 million years ago.

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Definitions:

Alternative Hypothesis

An alternative hypothesis is a statement in hypothesis testing that is directly tested and proposes a statistically significant difference between data sets.

Degrees Of Freedom

The number of independent pieces of information involved in estimating a parameter or calculating a statistic, often related to the sample size.

Interaction Effects

Occur when the effect of one independent variable on a dependent variable changes depending on the level of another independent variable.

Main Effects

The direct, independent impacts of individual independent variables on a dependent variable in the context of factorial designs.