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The correct option is A.
If a researcher only wanted to examine the relationship between exercise and grade point average, correlation analysis would be useful to test the variables.
The correlational analysis is a type of statistical technique which is employed in measuring linear relationships between several variables. A causal relationship that exists between variables cannot be inferred due to the application of correlational analysis, regardless of the magnitude of the observed correlation as examined.
A correlational research design makes investigates major relationships between variables without the control of the researcher or by manipulating any of them. A correlation will be reflecting the strength and direction of the relationship between two or more variables. The direction of a correlation can be either on the way of positive or negative.
This analysis is used to quantify a particular degree to which any two variables are related. As though the correlation analysis, you have been evaluating the correlation coefficient that can tell you how much a specified variable changes whenever the other one does the same. Correlation analysis will provide you with a linear relationship existing between two variables.
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