HELP!! The following data points represent the number of alligators in each body of water near Tom's house. 8, 5 , 12, 15, 8,5,12,15

Find the mean absolute deviation (MAD) of the data set.

How do you find principle and simple interest

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Evaluate cos2θ for cosθ = square root of 3/2