Linear Regression Slope Interpretation
A study examined the relationship between , the number of a person’s close friends, and , the number of times they check Facebook in an evening. The resulting least-squares regression equation is . Which of the following statements provides the best interpretation of the slope of the regression line?
The slope value suggests that the relationship between the studied variables is non-linear.
For each additional evening Facebook check, the average number of close friends increases by approximately 0.5492.
The slope indicates that when there are zero close friends, the predicted number of Facebook checks is 0.5492.
For each additional close friend, the average number of evening Facebook checks increases by approximately 0.5492.
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