If There Is a Positive Correlation Between Extraversion and Risk

question 18

Multiple Choice

If there is a positive correlation between extraversion and risk taking, then the________.

• A) researcher can be certain that extraversion causes risk taking
• B) higher a person's extraversion score, the more risks he or she is likely to take
• C) lower a person's extraversion score, the more risks he or she is likely to take
• D) researcher can be certain that extraversion does not cause risk taking

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Definitions:

Standard Deviation

An index showing the degree of spread or variability among a collection of numbers.

Confidence Interval

A range of values, derived from the statistical analysis of data, that is likely to include the true population parameter with a certain level of confidence.

Sample

A subset of individuals or observations from a population used to estimate parameters or statistics of the whole population.

Mean

The average of a set of numbers, calculated by summing them up and dividing by the number of summands.