In: Statistics and Probability
The Region Banking Company is studying the number of times the ATM located at the NorthPark Mall is used daily over each of the last 30 days. The usage times were as follows: 83, 64, 84, 76, 84, 54, 75, 59, 70, 61, 63, 80, 84, 73, 68, 52, 65, 90, 52, 77, 95, 36, 78, 61, 59, 84, 95, 47, 87, & 60 Arrange the data into equal class intervals of six's (6's) and determine the following: a. Class range b. Class width c. Class interval columns d. Class frequencies e. Class midpoints f. Class mean g. Modal class h. Class variance I. Class standard deviation