To Be Able to Conduct a T-Test It Is Important

question 7

Multiple Choice

To be able to conduct a t-test it is important:

• A)That the independent- as well as the dependent variable is measured on a nominal or ordinal scale.
• B)That the independent variable is measured on an interval- or ratio scale and the dependent variable is measured on a nominal- or ordinal scale.
• C)That the independent- as well as the dependent variable is measured on an interval- or ratio scale.
• D)That the dependent variable is measured on an interval- or ratio scale and the independent variable is measured on a nominal- or ordinal scale.

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Definitions:

Greatest Density

Refers to the area in a distribution or data set where points are most tightly clustered.

Normally Distributed

Describes a statistical distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Gasoline Prices

The cost per unit of gasoline, which can fluctuate based on factors such as crude oil prices, supply and demand, taxes, and market speculation.

Standard Normal Distribution

A normal distribution with a mean of zero and a standard deviation of one, used in many statistical methods.