3.06 Quiz: Scatter Plots Wrap-Up

For making a scatter plot of the data set, which would be the best scale and interval for the axis that represents the amount of

fluoride?

Water (L)

2

1

1.5

4.

3

1

5

Fluoride (mg)

1.1

0.8

1.2

3.2

1.6 0.2

3.6

O to 4 with intervals of 2

O to 4 with intervals of 0.2

2 to 5 with intervals of 0.5

1 to 4 with intervals of 1

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MrRoyal MrRoyal · Answer 1 · 2021-09-24T23:06:35+02:00

Scatter plots used dots to show the relationship between its variables.

The most appropriate scale is (b) 0 to 4 with intervals of 0.2

Given

[tex]Water \to 2, 1, 1.5, 4, 3,1,5[/tex]

[tex]Fluoride \to 1.1, 0.8, 1.2, 3.2, 1.6, 0.2, 3.6[/tex]

From the given dataset, we have:

[tex]Least = 0.2[/tex]

[tex]Highest = 5[/tex]

The best scale to use if 0 to 5, as it covers the given range.

Since, scale 0 - 5 is missing from the option,

The next scale to consider is 0 to 4

Also from the dataset, majority of the data elements are approximated to 1 decimal place.

This means that an interval of 0.2 would be more appropriate than an interval of 2.

Hence, the most appropriate option is (b) 0 to 4 with intervals of 0.2