Percentiles

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

Tags

CCSS.7.EE.B.3

You are told that your height is the 70th percentile of all heights for people your age. Which of the following is a correct interpretation of this information?

• Your height is the same as about 70% of all other people your age.

• Your height is the same as or higher than about 70% of all other people your age.

• Your score height is lower than approximately 70% of all other people your age.

• 70% of all people your age are taller than you.

Given the data set: 1, 2, 3, 6, 9, 11, 45, 102, calculate the percentile rank for 11.

• 70^th percentile

• 62.5^th percentile

• 72.5^th percentile

• 75^th percentile

What is the PERCENTILE RANK for the data value of 20 in the given data set.

• 33rd

• 15th

• 25th

• None of the above

The formula to find the percentile rank when you are given a data value is.

• percentile rank = n/100

• percentile rank = (number of values below) / n * 100 (round to nearest whole number)

• percentile rank = (number of values at or below) / n * 100 (round to nearest whole number)

• percentile rank = (number of values at or below) / 100 * n (round to nearest whole number)

Here are the weights (in pounds) of 10 puppies: 4 4 5 7 8 8 8 10 12 13 What is the percentile rank of a 5 pound puppy?

• 30%

• 20th percentile

• 70%

• 30th percentile

Here are the weights (in pounds) of 10 puppies: 4 4 5 7 8 8 8 10 12 13 What is the percentile rank of an 8 pound puppy?

• P₅₀

• P₇₀

• P₆₀

• P₄₀

What percentile is 74 in the following group of data (must be in order)?35, 65, 68, 100, 23, 69, 74, 70, 61, 90, 85, 55

• 60th

• 90th

• 75th

• 27th

Layla was told at her 11 year old well check that she was in the 82nd percentile for height. What does this mean?

• Layla is short - 82% of other 11 year old female are shorter than she is.

• Layla is tall - 82% of other 11 year old female are shorter than she is.

• Layla is short - 82% of other 11 year old female are taller than she is.

• Layla is tall - 82% of other 11 year old female are taller than she is.

John was told at his 9 year old well check that he was in the 35th percentile for weight. What does this mean?

• 35% of other 9 year old males weigh the same or less than John

• 35% of other 9 year old males weigh the same or more than John

• 65% of other 9 year old males weigh the same or less than John