What is linear interpolation - Definition and Meaning

Linear Interpolation :

Linear interpolation is a process of finding new value from straight line drawn between two co-ordinate points. From the known two values (x1, y1) and (x2, y2), you can find the y value, which is an unknown value at x point using the below given formula.

Formula :

Linear interpolation works better when the function between two values does not change rapidly.
Least Squares Method

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