Practice Median in Math

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

The median is the middle value of an ordered data set — half of the values are above it and half are below it.

Half the values are below, half are above. The true 'middle.'

Showing a random 20 of 50 problems.

Example 1

medium
A data set of 9 numbers has median 20. If every value is increased by 5, what is the new median?

Example 2

medium
A set of 12 numbers has median 30. You append the value 30 to the set. What is the new median?

Example 3

challenge
A set of n numbers (n even) has median m. You append the single value m. Is the new median still m? Explain.

Example 4

medium
Data set {x,4,6,9,12} is already sorted with median 6. What constraint does this place on x?

Example 5

easy
Find the median of {7,7,7,7,7}.

Example 6

medium
A list has median 20. If you replace the largest value with one that is even larger, what happens to the median?

Example 7

easy
Find the median of 10,2,8,4,6.

Example 8

hard
Three students have ages 12,14,16 (median 14). A fourth student joins, making the group's median 13.5. Find the fourth student's age.

Example 9

medium
Eight test scores are 72,85,91,68,77,88,94,80. Find the median.

Example 10

medium
Find the median of the first eight positive even numbers.

Example 11

challenge
Show that among any n distinct real numbers x1,…,xn, the median minimizes the sum of absolute deviations f(c)=∑i∣xi−c∣.

Example 12

medium
A data set sorted is 4,6,x,10 and its median is 7. Find x.

Example 13

easy
Find the median of 3,7,5.

Example 14

easy
In a class of 11 students, what position (rank) does the median occupy in sorted order?

Example 15

medium
In 5,9,9,12,15,18, find both the median and state whether it equals any data value.

Example 16

easy
Find the median of 20,5,13.

Example 17

easy
Find the median of 1,2,3,4,5,6.

Example 18

medium
Find the median of the data set {12,4,18,9,7,14,2}.

Example 19

easy
Find the median of 9,9,9.

Example 20

medium
What is the median of the first 10 positive integers?