Illustrating Quartiles, Deciles, and Percentiles

If you wish to divide a class into 10 equal parts, which measure of position is appropriate to use?

• decile

• median

• percentile

• quartile

When a distribution is divided into 4 equal parts, each score point that describes a distribution is called a _________.

• decile

• median

• percentile

• quartile

Which of the following is in equal position with the median score?

• 1st quartile

• 3rd quartile

• 5th decile

• 90th percentile

When a distribution is divided into 100 equal parts, each score point that describes a distribution is called a

• decile

• median

• percentile

• quartile

In a 50-item Statistics Test, Anna obtained a score of 42 which is considered as the 8th decile. Which one from the following statements is NOT TRUE?

• Anna scored equal or above 80% of her classmates.

• Anna’s score is below the 3rd quartile.

• Twenty percent (20%) of her classmates scored higher or equal to 42.

• If the passing mark is the 50th percentile, then she passed the test.

Which of the following is equal to the 7th decile in terms of position?

• Q3

• P70

• P75

• D5

If Q1 = 15 and Q3 = 23, then the interquartile range is

• 7

• 8

• 9

• 10

Which of the following is less than the 70th percentile in terms of position?

• Median

• 7th decile

• 8th decile

• Upper Quartile

If there are 10 numbers in a set of data, the 2nd quartile is the

• 3rd number

• 4th number

• 5th number

• average of 5th and 6th number

If the passing score of a 100-item standardized test is 50 and considered as the 60th percentile, which one from the following statements is NOT TRUE?

• 60% of the examiners got a score lower than or equal to 50.

• 40% of the examiners garnered a score of 50 and above.

• Obtaining a score that is in the 5th decile means passing the test.

• 40% of the examiners answered 50 or more questions correctly.