alleryStart learning →The statistic that measures how strongly two variables move together is the:
ACorrelation coefficient
BStandard deviation
COperational definition
DConfidence interval
Answer & Solution
Correct answer: A. Correlation coefficient
1. Correlational research looks at relationships rather than causes.
2. We can measure correlation by calculating a statistic known as a correlation coefficient.
3. It reports both the strength and the direction of the relationship.
4. Standard deviation describes the spread of a single variable instead.
_Source: OpenStax Psychology 2e (CC BY 4.0), Ch 2 'Psychological Research', sections 2.1-2.4_
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