## Chapter 1 - Definitions and Plots

### Instructions

- The first videos below explain the concepts in this section.
- This page also includes examples that you should attempt to solve yourself. You can check your answers and watch the videos explaining how to solve the exercises if you need help

### Concepts

- Statistics vs Parameters and their notation
- The difference in categorical and numerical data and how to graph each
- The difference in discrete and continuous numerical data
- The five number summary of data and the boxplot
- Measures of spread and the formula for standard deviation
- The shapes of distributions

### Exercises

**Directions:** You should try to solve each problem first, and then click "Reveal Answer" to check your answer.
You can click "Watch Video" if you need help with a problem.

1. Graph a boxplot for the following data: 6, 7, 7, 9, 11, 15, 18, 18, 30, 50, 70, 75, 100

See video for graph

2. Find the standard deviation for the following sample data:

We asked 10 A&M students (from outside CS/B) how many times they went home last semester.

3, 4, 3, 2, 0, 3, 7, 5, 2, 1

2