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 โ€” 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 2020. If every value is increased by 55, what is the new median?

Example 2

medium
A set of 12 numbers has median 3030. You append the value 3030 to the set. What is the new median?

Example 3

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

Example 4

medium
Data set {x,4,6,9,12}\{x, 4, 6, 9, 12\} is already sorted with median 66. What constraint does this place on xx?

Example 5

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

Example 6

medium
A list has median 2020. If you replace the largest value with one that is even larger, what happens to the median?

Example 7

easy
Find the median of 10,2,8,4,610, 2, 8, 4, 6.

Example 8

hard
Three students have ages 12,14,1612, 14, 16 (median 1414). A fourth student joins, making the group's median 13.513.5. Find the fourth student's age.

Example 9

medium
Eight test scores are 72,85,91,68,77,88,94,8072, 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 nn distinct real numbers x1,โ€ฆ,xnx_1, \dots, x_n, the median minimizes the sum of absolute deviations f(c)=โˆ‘iโˆฃxiโˆ’cโˆฃf(c) = \sum_i |x_i - c|.

Example 12

medium
A data set sorted is 4,6,x,104, 6, x, 10 and its median is 77. Find xx.

Example 13

easy
Find the median of 3,7,53, 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 5,9,9,12,15,185, 9, 9, 12, 15, 18, find both the median and state whether it equals any data value.

Example 16

easy
Find the median of 20,5,1320, 5, 13.

Example 17

easy
Find the median of 1,2,3,4,5,61, 2, 3, 4, 5, 6.

Example 18

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

Example 19

easy
Find the median of 9,9,99, 9, 9.

Example 20

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