Exercise

# Exercise 2. Blood pressure 2

Now we will compute the average and standard deviation for the subgroup we defined in the previous exercise (20-29 year old females), which we will use reference for what is typical.

You will determine the average and standard deviation of systolic blood pressure, which are stored in the `BPSysAve`

variable in the NHANES dataset.

Instructions

**100 XP**

- Complete the line of code to save the average and standard deviation of systolic blood pressure as
`average`

and`standard_deviation`

to a variable called`ref`

. - Use the
`summarize`

function after filtering for 20-29 year old females and connect the results using the pipe`%>%`

. When doing this remember there are`NA`

s in the data!