Measures of Position

The summative scores of selected Grade 10 students are:

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

How many students got a score below 10?

• 4

• 5

• 6

• 7

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

What is the range of the given data?

• 5

• 12.5

• 25

• 30

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

What is the 8^th score if the scores are arranged in ascending order?

• 12

• 15

• 17

• 19

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

Solve the Q₁ score.

• 9

• 9.75

• 10

• 10.75

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

Find the D₇ score.

• 17

• 17.6

• 19

• 19.6

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

Solve for P₅₀.

• 15

• 15.5

• 17

• 17.5

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

How many students are above the D₈?

• 3

• 4

• 5

• 6

9, 12, 19, 10, 26, 24, 17, 15, 30, 17, 5, 9, 15, 8, 17, 12, 15, 20, 21

What is the interquartile of the data?

• 5

• 10

• 15

• 20

What is the class size of the data?

• 3

• 4

• 5

• 6

What is the class interval of the Q₃ score?

• 76 – 80

• 81 - 85

• 86 - 90

• 91 - 95