Percent Quartiles

What are the score points which divide a distribution into four equal parts ?

• Deciles

• Median

• Quartiles

• Percentiles

In the set of the scores: 4, 1, 5, 2, 6, 5, 3, 8, 7,and 9, what is the median or 2nd quartile?

• 3

• 4

• 5

• 6

What is the first quartile of the data 4, 1, 5, 2, 6, 5, 3, 8, 7,and 9?

• 2.5

• 3.25

• 3.5

• 4

In this set of data: 4, 1, 4, 3, and 6, what is the 3rd quartile ?

• 4

• 4.5

• 5

• 5.5

In this set of scores: 4, 2, 3, and 1, what is the first quartile of the data set using interpolation?

• 1

• 1.25

• 1.5

• 1.75

If Q1 is 25% in percentile then , what is the percentile of the 3rd quartile?

• 30%

• 50%

• 75%

• 90%

What is the 3rd quartile in 1, 1, 5, 5, 3, 3, 4, 4, 2, 2 using interpolation?

• 4

• 4.25

• 4.5

• 5

Find the 1st quartile of the following using Sincich and Mendenhall Method:

100, 200, 205, 206, 314, 512, 600, 710, 800, 1000

• 100

• 200

• 205

• 206

Find the interquartile range (Q3 - Q1) of the following test scores of Grade 10 - Agyu students: 45, 50, 55, 60, 65, 70, 75, 80, 81, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130.

• 45

• 50

• 55

• 65

If I tell you that you scored at the 55th percentile on your final exam, you would know:

• 55% of the class scored the same or worse than you did

• You earned a 55% on the exam

• You failed the exam

• 45% of the class scored worse than you did