Quartile Percents

Which of the following best describes the process of finding the interquartile range for a set of data?

• ADD the biggest and smallest numbers

• Place the number in order from least to greatest then find the middle.

• Find the difference between the Maximum and the Minimum.

• Subtract Q3 from Q1

What data value is the upper quartile (Q3)?

• 64

• 62

• 66

• 58

(a)  

Match the following quartiles with their percentiles

• 50th Percentile

• 2nd Quartile

• 100th Percentile

• 1st Quartile

• 25th Percentile

• 3rd Quartile

• 75 Percentile

• Max

The middle number between the median and the maximum in an ordered set of numbers; also known as quartile 3

• Interquartile Range

• Lower Quartile

• Upper Quartile

Which box and whisker plot has the smallest lower quartile (Q1)?

• Top plot

• Bottom plot

Which box and whisker plot has the highest median?

• Top plot

• Bottom plot

If you were in the 3rd quartile for the class. Which is true?

• You are 25% taller than the rest of the class.

• You are 60 inches.

• You are taller than 75% of the class.

• You are shorter than 50% of the class.

What percent of the data is between 1 & 2.5

• 25

• 50

• 75

• 100