Graphing Skills #3

Scaling and Plotting points

Graphing skills 3 & 4

• An axis must be correctly scaled, or spaced out, in order to display the information properly

• The first step is to find the RANGE of the data

Scaling an axis

The range describes the difference between the highest and lowest values in the data set.

• Range = Largest value - Smallest value

​Step 1: Finding the range of the variable:

Divide the range by the number of intervals you want.

**IMPORTANT: consider how many spaces you have in your graph. You don’t want your data too spaced or too smooshed together

​Step 2: Divide

• Use your calculated value and round to the closest whole number.

• Each interval much be the same amount each time

​Step 3: Label with Rounded numbers

Poll

Find the range of the following mass (g) data recorded:

5,11,14,19,26,30,40

• 35

• 45

• 40

• 30

Hotspot

If we were finding the range of this data, fill in the blank in the equation:

Range = (___) - 55

Labeling

Fill in the missing numbers that belong on the axis below

Drag labels to their correct position on the image

21

4

16

12

15

3

2

20

8