# Homework 03

Due date: 2022-09-16.

1. Read OS4 Sections 2.1.2 and 2.1.4

Use the data set `loan50` contained in the package `openintro`. To access this data set, first load the package with the function `library` and then call the function `data` on `loan50`. See the lecture Summary Statistics for examples.

1. Read the helpfile for a description of this data set. In the console (not your homework assignment), run
``?loan50``
1. Pick a numerical variable and print the first 7 observations using the R function `head`. Then print the last 10 observations using the function `tail`.

2. Pick a numerical variable and calculate the mean and the median, using the functions `mean` and `meadian`. If one is bigger than the other, explain why that is probably the case.

3. Pick a numerical variable and calculate the standard deviation and the interquartile range, using the functions `sd` and `IQR`.

4. Pick a numerical variable and calculate a quantile of your choice. Interpret this statistic in the context of the data.