Q1. In developing a regression equation from the following data to predict y by x, the slope is:
x y
9 18
8 15
5 7
1 3
a) 1.88, b) 0.44, c) 4.76, d) 0.18
Q2. In developing a regression equation from the following data to predict y by x, the y intercept is:
x y
11 5
16 8
4 6
2 5
3 4
a) 3.504, b) 4.256, c) 10.550, d) 0.1867
Q3. A simple regression model has been developed using a sample of 11 pairs of observations. The sum of squares of error is 237.64. The standard error of the estimate is:
a) 5.139, b) 4.875, c) 4.648, d) 23.764