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Super minor typo fix (#893)

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Mine Cetinkaya-Rundel 2021-02-08 16:30:17 +00:00 committed by GitHub
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@ -150,7 +150,7 @@ This is an important part of the "do not repeat yourself" (or DRY) principle. Th
sd(x, na.rm = TRUE) / mean(x, na.rm = TRUE) sd(x, na.rm = TRUE) / mean(x, na.rm = TRUE)
``` ```
1. write your own functions to compute the variance and skewness of a numeric vector. 1. Write your own functions to compute the variance and skewness of a numeric vector.
Variance is defined as Variance is defined as
$$ $$
\mathrm{Var}(x) = \frac{1}{n - 1} \sum_{i=1}^n (x_i - \bar{x}) ^2 \text{,} \mathrm{Var}(x) = \frac{1}{n - 1} \sum_{i=1}^n (x_i - \bar{x}) ^2 \text{,}