Question

9the scatterplot shows the number of boys and the number of girls at a summer camp each day for 14 days.based on the scatterplot, which is the best prediction of the number of girls on a day when the number of boys is 71?a 71b 100c 88d 93

Explanation:

Step1: Analyze the scatter - plot trend

Look at the general pattern of the scatter - plot. As the number of boys increases, the number of girls also shows an increasing trend.

Step2: Locate \(x = 71\) on the \(x\) - axis (number of boys)

Imagine a vertical line at \(x = 71\). Then, based on the cluster of points and the upward trend of the data points in the scatter - plot, estimate the corresponding \(y\) - value (number of girls).

Step3: Compare with the options

Option A (\(71\)) is too low as the trend shows a higher number of girls for \(x = 71\). Option B (\(100\)) is too high. Option C (\(88\)) is also too low. Option D (\(93\)) best fits the upward trend of the data points in the scatter - plot when \(x = 71\).

Answer:

D. 93