Question

making an interpolation
swimmers at city pool
compare the number of swimmers at city pool and the outside temperature to make an interpolation.
what is the best estimate for the number of swimmers when the outside temperature is 75°f?
15 swimmers
20 swimmers
25 swimmers
30 swimmers

Explanation:

Step1: Locate \(x = 75\) on the x - axis (temperature axis)

Find the value \(x = 75\) on the horizontal axis labeled "Temperature (\(^{\circ}F\))".

Step2: Move vertically to the regression line

From \(x = 75\), move straight up until intersecting the orange regression line.

Step3: Read the \(y\) - value (number of swimmers)

At the intersection point of \(x = 75\) and the regression line, read the corresponding \(y\) - value on the vertical axis labeled "Swimmers". The \(y\) - value is approximately \(25\).

Answer:

25 swimmers