Severity: Warning

Message: count(): Parameter must be an array or an object that implements Countable

Filename: controllers/calculator.php

Line Number: 37

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The first step is to calculate the rank of the 25

The formula is R = P/100 x (n +1) where is the desired percentile and n is the number of ranks. From the above interpretation we get to know that P is twenty five and N is eight.

So the output is

R = 25/100 x (8+1) = 9/4 = 2.25

Now the percentile will be –

1. Lets suppose IR is the integer portion of R i.e number left to the decimal = 2

2. FR = fraction portion of R it tends to be 0.25

3. Scores with rank i.e IR +1 (2+1) i.e scores with rank 2 is 5 and scores with rank 3 is 8

4. Multiply the difference between the scores by FR and result to the lower score (0.25)(8-5)+5 = 5.75

Therefore 25

Example 2:

Solution - Number of people who scored less than John –

Total number of people –