Deciles divide data into how many equal parts?

Deciles divide data into how many equal parts?

• A. Ten
• B. Three
• C. Four
• D. Eight

Answer: (A)

Deciles are a type of quantile that splits a data set into ten equal parts. When the data are ordered from smallest to largest, decile boundaries separate the lowest tenth from the rest, then the next tenth, and so on up to the highest tenth. This creates ten groups with the same number of observations, making it easy to see how the data are distributed across the range. For context, other partitions use different counts: three parts are tertiles, four parts are quartiles, and eight parts are octiles, each providing a different level of detail about the distribution.

Deciles are a type of quantile that splits a data set into ten equal parts. When the data are ordered from smallest to largest, decile boundaries separate the lowest tenth from the rest, then the next tenth, and so on up to the highest tenth. This creates ten groups with the same number of observations, making it easy to see how the data are distributed across the range. For context, other partitions use different counts: three parts are tertiles, four parts are quartiles, and eight parts are octiles, each providing a different level of detail about the distribution.