Question

Find the values of the 30th and 90th percentiles of the data.

Please show your work step by step.
129, 113, 200, 100, 105, 132, 100, 176, 146, 152
Thanks! :)

Answer 1

So we would first add all the data points and set them equal to x
129+113+ 200+100+105+132+ 100+ 176+146+ 152= x
So x = 1353
Now to find the 30 /90 percentile multiply x by .3/.9
So the 30th percentile should be 405.9
And the 90th percentile should be 1217.7

Answer 2

100 and 176

Explanation:

129, 113, 200, 100, 105, 132, 100, 176, 146, 152

Arrange in ascending order

100,100, 105, 113, 129, 132, 146, 152,176, 200

The 10th percentile would be the I entry 100

The 90th percentile would be 176

So answers are

100 and 176