# Lesson 2

Plotting Data

Let’s collect and display some data about the class.

### Problem 1

In hockey, a player gets credited with a “point” in their statistics when they get an assist or goal. The table shows the number of assists and number of points for 15 hockey players after a season.

assists points
22 28
16 18
46 72
19 29
13 26
9 13
16 22
8 18
12 13
12 17
37 50
7 12
17 34
27 58
18 34

Make a scatter plot of this data. Make sure to scale and label the axes.

### Problem 2

Select all the representations that are appropriate for comparing bite strength to weight for different carnivores.

A:

Histogram

B:

Scatter plot

C:

Dot plot

D:

Table

E:

Box plot

### Problem 3

When is it better to use a table? When is it better to use a scatter plot?

### Problem 4

There are many cylinders with radius 6 meters. Let $$h$$ represent the height in meters and $$V$$ represent the volume in cubic meters.

1. Write an equation that represents the volume $$V$$ as a function of the height $$h$$.

2. Sketch the graph of the function, using 3.14 as an approximation for $$\pi$$.

3. If you double the height of a cylinder, what happens to the volume? Explain this using the equation.

4. If you multiply the height of a cylinder by $$\frac 1 3$$, what happens to the volume? Explain this using the graph.

(From Unit 5, Lesson 17.)