There Is a Statistical Relationship Between Two Variables If Which

question 42

Multiple Choice

There is a statistical relationship between two variables if which of the following is true?

• A) One of the variables has a higher mean than the other.
• B) The average level of one variable differs across levels of the other.
• C) The variables are conceptually similar (e.g., intelligence and common sense).
• D) all of the above

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Definitions:

Significance Level

A probability threshold set before testing hypotheses, below which the observed results are deemed significant enough to reject the null hypothesis.

Pooled Variance

Acombined estimate of variance for two or more groups in a sample, assuming that the populations have equal variances.

Sampling Distribution

The distribution of a statistic (like the mean or variance) derived from a large number of samples drawn from a specific population.

Sample Mean Difference

The difference between the average values from two samples, used in hypothesis testing to compare two groups.