The Table Shows the Phone Charge for 64 International Calls

Multiple Choice

The table shows the phone charge for 64 international calls that you made last week.Show the values in a grouped-data frequency table, using classes $0 to under $2, $2 to under $4, $4 to under $6, and so on.Use the grouped data table to estimate the standard deviation of the phone charges.Treat the data as a population.

A) 2.04
B) 2.67
C) 2.96
D) 2.28
E) 2.87