Exercise

# Calculating means by category

A good way to explore categorical variables is to calculate summary statistics such as the mean for each category. Here, you'll look at grouped means for the house prices in the Taiwan real estate dataset.

`taiwan_real_estate`

is available and `dplyr`

is loaded.

Instructions

**100 XP**

- Group
`taiwan_real_estate`

by`house_age_years`

. - Summarize to calculate the mean
`price_twd_msq`

for each group, naming the column`mean_by_group`

. - Assign the result to
`summary_stats`

and*look at the numbers*.