HP HP-28S - Finding the Linear Regression; Finding Predicted Values

Finding the Linear Regression
Calculate the straight line that best fits the data for CPI and PPI.
LR 3: 12.65
2: -10.43
1: 2.45
mHma~"IDm_
The line's intercept is -10.43, and its slope is 2.45. The intercept and
slope are also stored in the list ~PAR.
Finding Predicted Values
Suppose you want to find the predicted values for PPI when CPI has
values of 6 and 7. The predicted value can be calculated from the
slope and intercept stored in ~PAR.
Predict the value for PPI when CPI has value 6.
6 PREDV 3: -10.43
2: 2.45
1: 4.26
mHma~"IDm_
The predicted value is 4.26.
Predict
the value for PPI when CPI has value 7.
7 PREDV
3: 2.45
2: 4.26
1: 6.71
mHma~"IDm_
The predicted value is 6.71.
12: Statistics 137