A Correlation of

question 152

Multiple Choice

A correlation of +.55 between preschool attendance and self-esteem indicates that children who attend preschool have

• A) moderately higher self-esteem scores than children who do not attend preschool.
• B) significantly higher self-esteem scores than children who do not attend preschool.
• C) have significantly lower self-esteem scores than children who do not attend preschool.
• D) have moderately lower self-esteem scores than children who do not attend preschool.

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Definitions:

Analysis of Variance

A statistical method used to compare the means of three or more samples to determine if at least one sample mean is significantly different from the others.

Null Hypothesis

A default assumption that there is no significant difference or effect, to be tested against an alternative hypothesis in statistical testing.

Mean Yields

The average outcomes produced or returns obtained from different experiments or investments.

Test Statistic

A measure calculated from sample data to make inferences about a population parameter.