What is the mean median intrauterine range and mean & mad of 8,8,9,9,7,9,6

Mean: 8+8+9+9+7+9+6=56 Then, you divide by the number of numbers. 56/7=8 

Median: First, put them in order from least to greatest. 6,7,8,8,8,9,9. Find the middle of all of them. It would be 8. 

Range: 9-6=3. 

M.A.D (Mean Absolute Deviation):

You use the mean and find the difference between the mean and the numbers you were given. After that, get the absolute value of them. |x-#|

So, 8-6,   8-7,    8-8,    8-8,    8-8,      8-9,     8-9

       2.       1.       0.       0.       0.        1(a.v)   1.(a.v)

Finally, find the mean of the differences. 2+1+0+0+0+1+1=5. 5/8. (0.682)