Refer to the data set:
{-1, -3, -5, -7, 0, 0, 7, 9}
The 15th percentile of the eight numbers is
Sorting the numbers in ascending order of magnitude is
{-7, -5, -3, -1, 0 , 0 , 7 ,9}
The 15th percentile of the eight numbers is = 8 * 0.15 =1.2 th value in the sorted data
2 nd value in the sorted data
So, 15th percentile of the eight numbers is -5
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