Mode
The most frequent value.
Key idea
The most frequent value.
In depth
The mode is the most frequent value; there can be none, one, or several. It is the only average for categorical data. A bimodal distribution suggests two groups.
Worked example
Shoe sizes 7, 8, 8, 9, 8, 10: mode 8.
Real-world uses
- Finding the most popular shirt size to stock or the most common answer in a survey
Common mistake
Reporting the frequency instead of the value.
How to learn this
- Read the key idea and say it in your own words.
- Work through the worked example, then try a similar problem.
- Use the interactive lesson’s visual and mini-quiz to check the pattern.
Frequently asked questions
What is Mode?
The most frequent value. It is a topic at the beginner level in Probability & Statistics.
Where is Mode used in real life?
Real-world examples: Finding the most popular shirt size to stock or the most common answer in a survey.
What should I learn before Mode?
Make sure you are comfortable with Median, the previous topic in Probability & Statistics.
What is a common mistake with Mode?
Reporting the frequency instead of the value.
How can I practise Mode?
Open the interactive lesson, play with the visual, then answer the three-question mini-quiz. Getting two right marks the topic complete.
What comes after Mode?
Move on to Range next.
Related beginner topics in Probability & Statistics
- Types of Data – Categorical vs numerical, discrete vs continuous.
- Frequency Tables – Count how often each value occurs.
- Tally Charts and Pictographs – Simple visual summaries of counts.
- Bar Graphs – Compare categories using bars.
- Pie Charts – Show parts of a whole as sectors.
- Line Graphs – Show change over time.