Oh, can I finally get some help with finding percentiles please? Thanks!
1 Answer
Dec 11, 2017
Explanation:
There's lots of information available, if your text isn't clear. Here is a very good tutorial:
http://www.dummies.com/education/math/statistics/how-to-calculate-percentiles-in-statistics/
In this example we have nine data points. Arranged in order:
100
100
105
113
129
132
146
152
176
200
For 30th percentile the index is
For the 90th percentile the index is
The 9th number up from the lowest is 176.