Interpolation

Introduction

• If we are given a set of data points:

  X	1	2	3	4	5	6	7
  Y	28	21	96	96	120	87	50

• We know the value of y when x is a whole number, i.e. 1, 2, 3
• But when x is 1.5 we do not have a corresponding value for y.
• Interpolation is the method of estimating the value of y for a given x when we don't have a data point for it.