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A sample of college students was asked how much they spent monthly on coffee. Approximate the...

A sample of college students was asked how much they spent monthly on coffee. Approximate the standard deviation for the cost.

Monthly

coffeecoffee

cost​ ($)

Number of students

​10.00-19.99

7

​20.00-29.99

20

​30.00-39.99

24

​40.00-49.99

13

​50.00-59.99

6

The sample standard deviation for the cost is __

Math   Statistics-And-Probability   
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