Answer :

Cumulative frequency distribution shows the number of data items with values less than or equal to the upper class limit of each class.

What does a tabular summary of a set of data displaying the percentage of all items in various classes show?

A table summary of a collection of data displaying the relative frequency of items in each of multiple non-overlapping classes is known as a relative frequency distribution. The percentage or share of all the entries in a class that are in the relative frequency.

What kinds of variables are there in statistics?

These statistics variables can be generically categorised into four groups: independent variables, dependent variables, categorical variables, and continuous variables. These are not the only data types that quantitative and qualitative variables can store, including nominal, ordinal, interval, and ratio data.

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