Measures of Central Tendency of an Ungrouped Data

What measure of central tendency is calculated by adding all the values and dividing the sum by the number of values?

(a)  

What is the mean of the following numbers? 10, 39, 71, 39, 76, 38, 25

• 42

• 39

• 42.5

• 35.5

What number would you divide by to calculate the mean of 3, 4, 5, and 6?

• 6

• 3

• 5

• 4

The mean of four numbers is 71.5. If three of the numbers are 58, 76, and 88, what is the value of the fourth number?

• 64

• 60

• 76

• 82

What is the median of the following numbers? 10, 39, 71, 42, 39, 76, 38, 25

• 42.5

• 39

• 42

• 35.5

The front row in a movie theatre has 23 seats. If you were asked to sit in the seat that occupied the median position, in which seat would you have to sit?

• 1

• 11

• 23

• 12

What is the median score achieved by a student who recorded the following scores on 10 math quizzes? 68, 55, 70, 62, 71, 58, 81, 82, 63, 79

• 68

• 71

• 69

• 79

What is the mode of the following numbers? 12, 11, 14, 10, 8, 13, 11, 9

• 11

• 10

• 14

• 8

What measures of central tendency appears most often in a given set of scores or data?

(a)  

Which measure of central tendency is obtained using the middle score when all scores are arranged in increasing or decreasing order?

(a)