Understanding Percentiles and Quartiles

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

• Percentile

• Decile

• Quartile

• Median

The median score is also the _________________.

• 75th Percentile

• 5th Decile

• 3rd Decile

• 1st Quartile

It is a measure of position that divides the distribution into ten equal parts.

• Decile

• Quartile

• Percentile

• Median

The lower quartile is equal to ____________________.

• 50th Percentile

• 25th Percentile

• 2nd Decile

• 3rd Quartile

After solving the D8 of Lance's scores in Mathematics for the third quarter, he got the score 20. What does it mean?

• 8% of his scores are less than or equal to 20.

• 80% of his scores are less than or equal to 22.

• 88% of his scores are less than or equal to 20.

• 80% of his scores are less than or equal to 20.

John belongs to 5th decile in a Mathematics test. What does this mean?

• John performed better than the 50 % of the students who took the Math test.

• John performed better than the 70 % of the students who took the Math test.

• John performed better than the 60 % of the students who took the Math test.

• John performed better than the 80 % of the students who took the Math test.

Arrange the following scores in ascending order, 5, 7, 3, 6, 4, 7, 8, 9.

• 3, 4, 5, 6, 7, 7, 8, 9

• 3, 4, 4, 5, 6, 7, 7, 8

• 3, 4, 4, 6, 7, 8, 8, 9

• 3, 4, 4, 6, 7, 7, 8, 9

Given the scores of 10 students in Science. Find D8.

7, 8, 10, 11, 11, 12, 13, 13, 14, 15

• 14

• 15

• 13

• 12

25th percentile means?

• 25% scored below this point.

• 25 % scored above this point.

• 75% scored below this point.

• 80 % scored above this point.

In a 70 item test Melody got a score of 50 which is the 3rd quartile. This means that:

• she got the highest score

• her score is higher than 25 % of her classmates

• she surpassed 75% of her classmates

• 75 % of the class did not pass the test