Suppose

that an independent study of middle-level managers employed at companies

located in Atlanta, Georgia, was conducted to compare the salaries of managers

working at firm in Atlanta to the salaries of middle-level managers across the

nation. The following data show the salary, in thousands of dollars, for a

sample of 15 middle-level managers employed at companies in the Atlanta area.

The

average marks of 80 students was found to be 40. Later it was discovered that a

score of 54 was misread as 84. Find the correct average marks.

“Mode

is easy to calculate and understand. In some cases it can be located merely by

inspection.” Consider the number of letters in each word as the variable.

Compute the median.