Descriptive statistics in R

Summarizing a sample's center and spread.

values <- c(12, 15, 15, 18, 21, 24, 24, 30, NA)

avg <- mean(values, na.rm = TRUE)
mid <- median(values, na.rm = TRUE)
spread <- sd(values, na.rm = TRUE)
variance <- var(values, na.rm = TRUE)

quartiles <- quantile(values, na.rm = TRUE)
iqr <- IQR(values, na.rm = TRUE)
span <- range(values, na.rm = TRUE)
overview <- summary(values)

How it works

1. mean, median, sd, and var need na.rm for gaps.
2. quantile and IQR describe the distribution's shape.
3. summary prints the five-number summary at once.

Keywords and builtins used here

• IQR
• c
• mean
• median
• quantile
• range
• sd
• summary
• var

The run, in numbers

Lines

11

Characters to type

333

Tokens

98

Three-star pace

90 tpm

At the three-star pace of 90 tokens a minute, this run takes about 65 seconds.

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Step 1 of 3 in Describing, step 1 of 11 in Statistics.

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Descriptive statistics in other languages

• Python