Equation of the Line Fitted by Least Squares
- A chemist wishes to study the relation between the drying time of a paint and
the concentration of a base solvent that facilitates a smooth application.
The data of concentration setting x and the observed drying times y are
recorded in the first two columns as follow.
由 Scatter Diagram 可以看出可能具有線性關係,
假如我們想要知道當 concentration x=2.5 時, 它的 drying time y 可能為多少?