Review Measures of Position for ungrouped data

Which of these fractiles divides the data set into four equal parts?

• Decile

• Median

• Percentile

• Quartile

In a 70-item test, Melody got a score of 50 which is the third quartile.

This means that:

• She got the highest score.

• Her score is higher than 25% of her classmates.

• She surpassed 75% of her classmates.

• Seventy-five percent of the class did not pass the test.

The data shows the score 0f 11 students in Mathematics short quiz.

1, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9

Find Q₂.

• 4

• 5

• 5.5

• No asnwer

consider the score distribution of 15 students given below:

72 , 73 , 74 , 74 , 77 , 79 , 79 , 79 , 80 , 81 , 82 , 82 , 83 , 86 , 87

The median score is:

• 80

• 82

• 73

• 79

consider the score distribution of 15 students given below:

72 , 73 , 74 , 74 , 77 , 79 , 79 , 79 , 80 , 81 , 82 , 82 , 83 , 86 , 87

The P80 score is:

• 83.8

• 84

• 84.8

• 85

The data shows the score 0f 11 students in Mathematics short quiz.

1, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9

Find Q₃.

• 7

• 8.5

• 8

• No answer

In the set of scores: 14, 17, 10, 22, 19, 24, 8, 12, and 19,

the median score is _______.

• 14

• 17

• 19

• 22

Mel’s score in a 75 - item test was the median score.

What is his percentile rank?

• 50^th

• 35^th

• 75^th

• 25^th

The data shows the score 0f 11 students in Mathematics short quiz.

1, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9

Find D₆.

• 6

• 6.2

• 6.5

• 6.8

If a data set consists of 24 scores, which position is the median?

• 5^th

• 10^th

• 12^th

• 12.5^th