histogram

noun

UK /ˈhɪstəɡræm/

US /ˈhɪstəɡræm/

A histogram is a chart with bars that shows how many things are in each group.

The teacher made a histogram to show how many students got each score on the test.

SYNONYMS

bar chart bar graph frequency chart column chart

RELATED WORDS

graph chart data frequency statistics

OTHER MEANINGS

2. A diagram showing the distribution of numerical data by means of rectangles whose widths represent class intervals and whose areas are proportional to the frequencies.

The histogram revealed that most values clustered around the mean.

3. In image processing, a graph showing the number of pixels at each brightness level in a digital image.

Adjusting the histogram improved the photo's contrast.

4. A visual summary used in statistics to check the shape and spread of a dataset.

Before choosing a statistical test, she plotted a histogram to check for normality.