Lesson 4

Question 1

Finding the mean

Answer 1

mean(c(x, y, z))

Question 2

What does na.rm=TRUE does when working out the mean?

Answer 2

It ignores the character values within a variable and just calculates the acceptable values.

Question 3

What is a Binomial distribution?

Answer 3

A distribution where there are events that can only have a pass/fail outcome e.g. coin toss

Question 4

Calculating the probability of a binomial distribution

Answer 4

pbinom(q, size, prob)

Question 5

Calculating the distribution of a repeated binomial experiment

Answer 5

rbinom(n, size, prob)

Question 6

Creating a histogram

Answer 6

hist(X)