Percent Deciles

What measures of position divides the distribution into 100 equal parts?

• quartiles

• deciles

• percentiles

• range

What measures of position divides the distribution into 10 equal parts?

• quartiles
• deciles
• percentiles
• range

What measures of position divides the distribution into 4 equal parts?

• quartiles
• deciles
• percentiles
• range

How many percent corresponds P₂₅ if you will interpret it?

• 10%
• 25%
• 50%
• 60%

How many percent corresponds Q3 if you will interpret it?

• 25%
• 50%
• 75%
• 90%

How many percent corresponds D6 if you will interpret it?

• 20%
• 40%
• 60%
• 80%

The Median is also referred to as

• the 25th Percentile

• the 50th Percentile

• the 75th Percentile

• the 100th Percentile

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

Jenny scored at the 99th percentile on a test. How should we interpret this information?

• Jenny scored better than 99% of people who took this test

• Jenny scored worse than 99% of people who took this test

• Jenny got 99% of the questions on the test right

• Jenny got 99% of questions on the test wrong

Anna and her brother are both 62 inches tall. Anna is in the 85th percentile for height for her age and her little brother is in the 90th percentile. Who is taller for their age?

• They're the same, both 62 inches.
• Anna, she's taller than more people. 
• Brother, he's taller than more people. 
• You can't tell if you don't know the mean and standard deviation.