we know that
To calculate the percentile of a data set, we should first order all the values in the data set from smallest to largest.
[10,24,34,45,52,67,78,90,111,120]
As their are
10
data points
and
70% of this is
(70/100)*10=7
Take the index and the next greatest number and find the average.
Because,the index is a whole number
so
[10,24,34,45,52,67,78,90,111,120]
(78+90) /2=84
so
70th
percentile is equal to 84
the answer is
The 70th percentile is 84