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# What is a frequency table?

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A frequency table is a mathematical graph that identifies the number of times pieces of data occur in a given sequence. Most frequency tables contain three columns and between five and ten rows.

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The first column lists the separate pieces of data. If the data components are numerical values, the information in the first column is listed in ascending order. If the pieces of data cover a wide range of numbers, then the data in the first column is divided into intervals. In a test that measures scores from one to 100, for example, an individual might begin the first column with 0-10, then move to 11-20 and so forth. The second column in a frequency table tallies the number of instances a data value occurs. After each data or data interval is tallied, the third and final column puts the overall tally for each piece of data into numerical form.

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## Related Questions

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A bar graph is a way to visually represent a set of data. Bar graphs are particularly useful for data that is easy to categorize. The category is traditionally placed on the x-axis, and the values are put on the y-axis.

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The main difference between a histogram and a bar graph is that a histogram displays quantitative data while a bar graph displays qualitative data. Quantitative data is numerical and can be measured by counting. Qualitative data refers to a trait or characteristic.

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