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The number of times a value or category occurs, or the number of observations in a class interval.

The number of observations belonging to a particular value, category or class.

Grouping summarises the observations by recording how many fall into each category or numerical interval. These counts are called frequencies. A shorter table can make the distribution clearer: you can see where values are concentrated and spot patterns more easily.

The number of times a value or category occurs in a data set.

Check that each value belongs to exactly one class and that the frequencies add up to the number of observations.

Distinguish exact class frequencies from estimated statistics: grouping does not make the counts themselves approximate.

Check that every observation has been counted once and that the frequencies add to the total.

The number of observations or people in a particular group.

The number of observations belonging to a particular category, value or class interval.

The number of observations in a value, category or class interval.

The number of times a particular value or category occurs in a data set.

The number of times a value occurs, or the number of observations in a class interval.

The number of times an outcome or event occurs in collected data.

The number of times an event occurs, or the number of observations with a specified characteristic.

Frequency

Definition

How each exam board covers it

Edexcel GCSE Statistics · 1ST0

Exam tips

Revise Statistics with GradeGen

Definition

How each exam board covers it

Edexcel GCSE Statistics · 1ST0

Exam tips

Related key terms

Revise Statistics with GradeGen