Point out the wrong statement.

R can approximate quantiles for you for common distributions. For example, the following code will approximate the 25th percentile of a normal distribution:

quantile(rnorm(1000), 0.25)

This will return a value that is approximately equal to the 25th percentile of a normal distribution.

There are many types of random variables, including continuous random variables, discrete random variables, and mixed random variables. A continuous random variable is a random variable that can take on any value within a given interval. A discrete random variable is a random variable that can take on only a finite number of values. A mixed random variable is a random variable that can take on both continuous and discrete values.