Measures of Position

The median score is also the ____________________.

• 1^st quartile

• 3^rd decile

• 5^th decile

• 75^th percentile

When a distribution is divided into hundred equal parts, each score point that describes the   distribution is called _______

• Mean

• Decile

• Quartile

• Percentile

The lower quartile is equal to ________

• 2^nd decile

• 3^rd quartile

• 25^th percentile

• 75^th percentile

The passing mark of a 100-item test is the 3^rd quartile score. How many items should the students answer correctly to pass the test?

• At least 25 items

• at most 50 items

• at least 50 items

• at least 75 items

Len’s score in a 75-item Mathematics test was the median score. What is his percentile rank?

• 25

• 50

• 75

• 80

What is the 25^th  percentile of the following set of data? 6, 8, 10, 12, 14, 16, 18, 20?

• 6

• 8

• 12

• 18

The upper quartile of a data set is the 13th value. How many data values are there?

• 13

• 16

• 19

• 21

Jemma’s score is the 79th percentile. How should this be interpreted?

• Jemma answered 79% of the questions correctly.

• Jemma scored lower than 79% of students who took the same test.

• Jemma scored higher than 79% of students who took the same test.

• 79% of the class did not pass the test.

The scores of students who took a Math test are 40, 45, 49, 53, 61, 65, 71, 79, 85, and 91.  At what percentile would the student be if he got a score of 71?

• 50^th

• 60^th

• 70^th

• 80^th

Which of the following is true?

• Md = Q2 = D5 = P50

• Q3 = D5 = P75

• Q1 = D3 = P30

• D₇ = P₇₅ = Q₃