The mean is defined as the a. range of the data set b. average of a data set. c. middle of the data set. d. number that shows up most often in a data set.

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

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Solve for x and select the correct answer