How to find the mode
- Count how often each value appears (a tally or frequency table).
- Find the highest count.
- Every value with that count is a mode.
If every value appears the same number of times, there is no mode. If two values tie for the top count the data are bimodal; three or more ties make them multimodal.
When the mode is the right average
The mode is the only average that works for categories (most common shoe size, most popular answer) and for spotting clusters. For measured data with many distinct decimals it is often useless, because nothing repeats; group the values into ranges first, or use the median.
Frequently asked questions
Can there be more than one mode?
Yes. If two or more values share the highest frequency, each is a mode. Two modes is bimodal; more is multimodal.
What if no number repeats?
Then the data set has no mode. Some textbooks say “every value is a mode”, but the usual convention, and this calculator’s, is “no mode”.
Is the mode always one of the data values?
Yes, unlike the mean and median. It is simply the most common value that actually occurs.