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

The 75th percentile is also know as the

• median
• third quartile
• 1st quartile`
• interquartile range

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

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.

Tags

CCSS.6.SP.B.5

The five-number summary of the distribution of scores on the final exam in Psych 101 last semester was: 20 40 62 84 100. Which of the following best describes the location of the 60th percentile?

• It is a score of 84

• The 60th percentile is between 62 and 84

• The 60th percentile is between 84 and 100

• The 60th percentile is between 40 and 62

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

• 70^th percentile

• 66.7^th percentile

• 72.5^th percentile

• 75^th percentile

Find the 46th percentile of this set of 11 values

22, 5, 12, 16, 31, 25, 30, 39, 32, 33, 18

• 25.06

• 23.56

• 22.49

• 25.16

What is the percentile rank of 74 in the following group of 15 data values? 35, 65, 68, 100, 23, 69, 74, 70, 61, 90, 85, 55, 30, 65, 80

• 69th

• 90th

• 75th

• 27th

Find P₂₀ for the following set of 15 data values.

35, 65, 68, 100, 23, 69, 74, 70, 61, 90, 85, 55, 30, 65, 80

• 12

• 39

• 35

• 57

The Median is also referred to as

• the 25th Percentile

• the 50th Percentile

• the 75th Percentile

• the 100th Percentile

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

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

• 31st

• 15th

• 25th

• None of the above