NEED HELP ASAP
The number of hours per week that twenty students in a mathematics classroom study are represented by the data below.

1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 5, 6, 7, 7, 7, 9, 9, 9, 9

Which statements about the data are true? Choose all that are correct.


A) The median number of hours spent studying per week is 3.


B) The mean number of hours spent studying per week is 4.55.


C) The median number of hours spent studying per week is 4.


D) The mean absolute deviation of time spent studying per week is approximately 2.7 hours.


E) The number of hours spent studying per week cluster closely around the median number of hours spent studying.