# What Is a Decile?

Definition, Formula to Calculate, and Example. What Is a Decile?

A decile is a statistical unit used to measure the dispersion of a data set. The dispersion of a data set is a measure of how spread out the data is. The formula to calculate a decile is: Decile = (N + 1) * X, where N is the number of data points in the data set and X is the decile number. For example, if there are 10 data points in a data set, the first decile would be (10 + 1) * 1 = 11. The second decile would be (10 + 1) * 2 = 22, and so on. What is another word for decile? There is no single word that has the exact same meaning as "decile," but there are several words that are similar in meaning. Some of these include "quartile," "percentile," and "fraction."

What is the formula for calculating variance? The variance of a random variable is the expected value of the square of the random variable's deviation from its mean. The variance can be written as:

\$\$sigma^2 = mathrm{E} left[ left( X - mu right)^2 right]\$\$

where \$sigma^2\$ is the variance, \$mathrm{E} left[ cdot right]\$ is the expected value operator, \$X\$ is the random variable, and \$mu\$ is the mean of the random variable. What is decile and percentile? Decile is a statistical unit that is used to divide data into ten equal parts. It is similar to percentile, but there are some important differences.

Percentile is a statistical unit that is used to divide data into one hundred equal parts.

Decile is used more often in economics, while percentile is used more often in statistics.

### What is the formula to calculate percentile?

To calculate a percentile, you first need to order all the values in the data set from smallest to largest. Then, you can use the following formula:

Percentile = (n/100)*(k-1)

where n is the number of values in the data set, and k is the percentile you want to calculate.

What does decile mean in economics? A decile is a statistical measure used in economics that splits a population into 10 equal groups, based on the distribution of a variable. The first decile group includes the bottom 10% of the population, the second decile group includes the next 10% of the population, and so on.

The word "decile" comes from the Latin word for "ten," which is "decem."