Question

your turn:
1 over the last 8 snowstorms, john recorded the amount of snowfall in his driveway and the amount of time it took him to shovel his driveway. he recorded his data in the table.

applying what you know
what kind of correlation was your graph?
a) positive b) negative

how many hours did it take them to shovel 18 inches of snow?

Explanation:

Step1: Plot data points

Plot each pair $(x,y)$ where $x$ = Snowfall (in), $y$ = Time (hrs):
$(2,1), (4,1), (6,2), (10,4), (12,3), (8,1), (12,4), (14,4)$

Step2: Identify correlation trend

As $x$ (snowfall) increases, $y$ (time) generally increases.

Step3: Estimate time for 18 inches

Use the positive trend: each 2-4 inch increase adds ~1 hr. From 14 inches (4 hrs), adding 4 inches (to 18) adds ~1 hr.

Answer:

What kind of correlation was your graph?
A) Positive

How many hours did it take them to shovel 18 inches of snow?
$\boldsymbol{5}$