(08.02)Using the following data, calculate the mean absolute deviation: 10, 7, 1, 6, 7, 9, 8, 10, 2, 5
What is the mean absolute deviation for these data?

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?