Answer:
P20=88.4
Step-by-step explanation:
Formula:
Pk=K(n+1)/100;k=20,n=6
P20=20(6+1)/100
P20=20(7)/100
P20=140/100
P20=1.4th
1.4th is the measure of position
Using LI(Linear Interpolation)
*89-88=1
*1×0.4=0.4
*88+0.4=88.4
Therefore, The 20th percentile of the given following data is 88.4
