Question

Somebody help please, one quick problem (25 points):

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

1 to 4 with intervals of 1
2 to 5 with intervals of 0.5
0 to 4 with intervals of 2
0 to 4 with intervals of 0.2

Answer 1

It is in fact, the 0 to 4 with intervals of 0.2 Since all numbers in this set have decimals in them, a scale of 2 or 1 would not be specific enough. Also, a scale from 1 to 4 would not show 2 of the data points. Therefore, by showing all of the points with an appropriate scale, the last option is the best option.

Explanation:

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Answer 2

The best scale and interval would the 0 to 4 with intervals of 0.2 Since all numbers in this set have decimals in them, a scale of 2 or 1 would not be specific enough. Also, a scale from 1 to 4 would not show 2 of the data points. Therefore, by showing all of the points with an appropriate scale, the last option is the best option.

Hope this helps!