Question

Three dentists wanted to compare the ages of their patients. They each calculated their patients’ mean age and the mean absolute deviation of their ages. They displayed the results in a table.
Which statements are true?
Choose exactly two answers that are correct.
Dentist Mean patient age MAD
Appiah 43 9.7
Cantwell 29 13.9
Singh 41 14.1
A. Dr. Appiah’s patients’ ages vary more than do Dr. Cantwell’s patients’ ages.
B. Dr. Appiah’s patients’ ages vary less than do Dr. Singh’s patients’ ages.
C. Dr. Cantwell’s patients’ ages and Dr. Singh’s patients’ ages vary about the same amount.

Answer 1

D.


Dr. Singh’s patients’ ages and Dr. Appiah’s patients’ ages vary about the same amount.

Answer 2

im thinking B

Answer 3

I have to have 2 that are it. If I can't figure this out I am going to fail this is the time I can take this.

Answer 4

B and C c becaus Dr. Cantwell’s patients’ ages and Dr. Singh’s patients’ ages vary about the same amount. by only .2 from each other.

Answer 5

Thank you can you help me with 1 more

Answer 6

ill try

Answer 7

Four friends played mini golf. Their scores were –3, –2, –1, and 2.



What is the mean absolute deviation of their scores?

Answer 8

its -3,-2,-1 and 2

Answer 9

-3 -2 -1 2 ?

Answer 10

Yes what is the MAD. I think it 1.5 but I am not sure

Answer 11

sorry i dont know this one

Answer 12

thanks though I will give you a medal