Emily measured the depth of water in a bathtub at two minute intervals after the tap was turned off and the stopper released. The table shows her data.

a) Make a scatter plot for the data.
b) Describe the correlation of the scatter plot.
c) What will the approximate depth be at 15 seconds?

Time-(in minutes) | Depth-(in cm)
2 | 4
4 | 41
6 | 38
8 | 37
10 | 32
12 | 24
14 | 20
16 | 19
18 | 13

1 answer

You can find handy least-squares and correlation coefficient calculators at

www.mathsisfun.com/data/least-squares-calculator.html
www.mathsisfun.com/data/correlation-calculator.html
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