PRC-2 · Chapter 10 · Question 8 of 60
Given the mathematical data set: ∑x = 75, ∑y = 225, ∑xy = 2851, ∑x² = 625, and n = 6. If calculated, what does the resulting equation y = a + bx represent?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) The regression line of y on x.
Explanation
These standard sum parameters are used to calculate the slope (b) and y-intercept (a) to formulate the regression line y on x, which predicts the dependent variable y.
More Correlation and Regression MCQs
- Q10In a simple linear regression equation represented as y = 39 - 0.12x, what does the value -0.12 represent?
- Q11Why is it important to remember that a high correlation coefficient does not prove causation?
- Q12If variable X represents advertising spend and variable Y represents sales revenue, what is the primary purpose of constructing a…
- Q13If the Pearson correlation coefficient between two variables is calculated as +1.25, what conclusion should be drawn?
- Q14Which of the following statistics specifically measures the proportion of the total variance in the dependent variable that is explained…