Exact sampling distribution

To quantify how the point estimate (sample statistic) you are interested in varies, you need to know all the possible values it can take, and how often. That is, you need to know its distribution.

The distribution of a sample statistic is called the sampling distribution. When we can calculate this exactly, rather than using an approximation, it is known as the exact sampling distribution.

Let's take another look at the sampling distribution of dice rolls. This time, we'll look at five eight-sided dice. (These have the numbers one to eight.)

An eight-sided die.

tidyr, dplyr, and ggplot2 are loaded.

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Sampling in R

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ลองทำแบบฝึกหัดนี้โดยเติมโค้ดตัวอย่างนี้ให้สมบูรณ์

# Expand a grid representing 5 8-sided dice
dice <- ___







# See the result
dice

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