Suppose there are 400 students in your school class. What class rank is the 20th percentile?

0.2 * 400 = 80

80/400

20

To find the class rank that corresponds to the 20th percentile, you need to determine the number of students below that rank.

First, calculate 20% of the total number of students:

20% of 400 = (20/100) * 400 = 80

This means that 80 students should have a class rank below the 20th percentile.

Therefore, the class rank that corresponds to the 20th percentile is 80.

To determine the class rank at the 20th percentile, we first need to understand what the percentile represents. The percentile is a way to measure the position or rank of a certain data point within a whole set of data.

In this case, we have 400 students in the class, so to find the 20th percentile, we need to determine where exactly this rank falls.

To calculate the rank, we can follow these steps:

1. Calculate 20% of the total number of students in the class by multiplying 400 by 0.20 (20%).

20% of 400 = 0.20 * 400 = 80

2. The rank of the 20th percentile will be the student ranking 80th in the class.

Therefore, the 20th percentile class rank would be the 80th student in the class.