The means of x and y in a sample are 50 and 100. The slope of the least-squares regression line is 1.5.
What is the y-intercept?
- A
75
- B
50
- C
150
- Dcheck_circle
25
Explanation
The line passes through (x-bar, y-bar): a = y-bar - b * x-bar = 100 - 1.5(50) = 25.