Question Help ASAP Consider the grouped sample data to the right.
a) Calculate the approximate mean of these sample data.
b) Calculate the approximate standard deviation of these sample data.
Values
5 to under 10
10 to under 15
15 to u
o under
20
20 to under 25
25 to under 30
Frequency
13
7
22
29
6
a) The approximate mean of these sample data is 18.019
(Round to three decimal places as needed.)
b) The approximate standard deviation of these sample data is 6.155
(Round to three decimal places as needed.)