Question

What is the mean and mode of the data set shown below? {2, 4, 5, 6, 8, 2, 5, 6}

Answer 1

The average is calculated by adding all numbers and dividing by the count:

(2+4+5+6+8+2+5+6)/8 = 38/8 = 4.75

The mode is the number that occurs most often, however, this is the case for 2, 5 and 6. A data set can have multiple modes. 2, 5 and 6 are modes.