Mode Calculator

Published on: June 29, 2025
Final Answer: Free • Full Steps: Plus

This Mode Calculator finds the most common value in a list and shows the working line by line. Every value is tallied, and the one reaching the highest count is the mode. A list can have two or more modes when several values tie, and no mode at all when nothing repeats, so both of those results are real answers rather than errors. Following the same pattern every time is what makes the mode easy to check and repeat for any list.

Step-by-step method

  1. Set up the problem.
  2. Count how many times each value appears.
  3. Take the value or values with the highest count.
See Example 1 Hide Example 1

Problem

\(1,\; 3,\; 3,\; 7\)

Approach

Step-by-step method

  1. Set up the problem.
  2. Count how many times each value appears.
  3. Take the value or values with the highest count.

Step 1

Step 1 - Set up the problem.

In this problem: We are finding which value appears most often in \(1,\; 3,\; 3,\; 7\).

\(1,\; 3,\; 3,\; 7\)

Step 2

Step 2 - Count how many times each value appears.

In this problem: Going through the list and tallying each value: \(1\) appears \(1\) time, \(3\) appears \(2\) times, \(7\) appears \(1\) time.

\(\begin{array}{c|c} x & \text{count} \\ \hline 1 & 1 \\ 3 & 2 \\ 7 & 1 \end{array}\)

Step 3

Step 3 - Take the value or values with the highest count.

In this problem: The highest count in the table is \(2\), reached by \(3\).

\(\text{Mode} = 3\)

Final Answer

\(\text{Mode} = 3\)
See Example 2 Hide Example 2

Problem

\(9,\; 9,\; 9\)

Approach

Step-by-step method

  1. Set up the problem.
  2. Count how many times each value appears.
  3. Take the value or values with the highest count.

Step 1

Step 1 - Set up the problem.

In this problem: We are finding which value appears most often in \(9,\; 9,\; 9\).

\(9,\; 9,\; 9\)

Step 2

Step 2 - Count how many times each value appears.

In this problem: Going through the list and tallying each value: \(9\) appears \(3\) times.

\(\begin{array}{c|c} x & \text{count} \\ \hline 9 & 3 \end{array}\)

Step 3

Step 3 - Take the value or values with the highest count.

In this problem: The highest count in the table is \(3\), reached by \(9\).

\(\text{Mode} = 9\)

Final Answer

\(\text{Mode} = 9\)

Example Problems

Click one to load it into the box and solve it.