Which of the following is true concerning three different ways tocalculate an average?

a. The arithmetic mean average is the score occurring most often.

b. All three ways of calculating averages may be used to mislead when details about the calculation are not disclosed.

c. The arithmetic mean average, the median average, and the mode average are all calculated in the same way.

d. The median average is calculated by adding the value of all scores and then dividing that sum by the number of scores.