Question

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

Explanation:

Step1: Identify data range

The minimum value of fluoride is 0.2 mg and the maximum is 3.6 mg.

Step2: Analyze each option

• Option 1: 1 to 4 with intervals of 1 won't include 0.2.
• Option 2: 0 to 4 with intervals of 2 is too broad, won't show data details well.
• Option 3: 0 to 4 with intervals of 0.2 covers the range well and shows details.
• Option 4: 2 to 5 with intervals of 0.5 won't include values below 2 like 0.2, 0.8, 1.1, 1.2, 1.6.

Answer:

0 to 4 with intervals of 0.2