P3/10D
SIMPLE LINEAR REGRESSION - PRACTICAL
It is considered that a linear regression model may be appropriate
for the analysis of the following data, consisting of 11 observations of
a response variable y and an explanatory variable x. Analyse the data
and, in particular, find 95% confidence intervals for
(a) the slope of the regression line;
(b) the expected value of y, given x = 10.
Plot the data, and comment on any significant features revealed.
x y
10.0 22.94
8.0 19.85
13.0 19.65
9.0 20.25
11.0 22.38
14.0 23.84
6.0 20.55
4.0 19.53
12.0 21.55
7.0 19.72
5.0 20.19