The number of pets owned by eight classmates is shown below: 1, 3, 2, 2, 1, 3, 3, 1 part a: what is the mean of the data? show your work. (4 points) part b: use your answer from part a to calculate the mean absolute deviation for the data. show your work. (6 points)

PART--A:

        Mean= 2

PART-- B:

           MAD=0.75

PART--A :

We are given data points as:

   1, 3, 2, 2, 1, 3, 3, 1

Total number of data points=8

Mean is calculated as the average of the data points.

i.e.

PART--B :

Now the absolute deviation of the data points from the mean is calculated as:

|1-2|=1

|3-2|=1

|2-2|=0

|2-2|=0

|1-2|=1

|3-2|=1

|3-2|=1

|1-2|=1

Hence, the mean of these absolute deviation also known as Mean Absolute deviation i.e. MAD is calculated as:

30 people weigh 160 pounds or more