Percentile for Grouped Data

The median score is also the _____________.

• 50^th Percentile

• 2^nd Decile

• 3^rd Quartile    

• 1^st Quartile

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

• quartile

• Decile

• Percentile 

• Median

The lower quartile is equal to ______.

• 10^th percentile   

• 25^th Percentile    

• 50^th Percentile  

• 75^th Percentile

Akira got a score of 55 which is equivalent to 70th percentile in a mathematics test. Which of the following is NOT true?

• Her score is below the 5th decile

• She scored above 70% of her classmates

• Thirty percent of the class got scores of 55 and above.

• If the passing mark is the first quartile, she passed the test.

In a 70-item test, Aron got a score of 50 which is the 75th percentile. This means that

• she got the highest score.

• she surpassed 75% of her classmates.

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

• seventy-five percent of the class did not pass the test