PREDV

Member Of Menu: 
Stat
Argument Types: 
Real
Symbol
Expression
Result Type(s): 
Real
Symbol
Expression
Invertible: 
No
Valid In Expression: 
Yes
Stack Diagram: 
Real1 → Real2
Symbol1 → Expression2
Expression1 → Expression2

This operation predicts a value for the dependent variable given an input value from the independent variable by using the results from the most recent linear regression. It expects to find a variable called ∑PAR which is a list of four real values. The third and fourth real value in that list is the intercept and slope of the line returned by the linear regression. The intercept and slope are best calculated by using the LR operation.

The operation calculates the predicted value using the formula:

Real2 = ( Real1 x slope) + intercept