Median and Quartiles

The Lower Quartile is ¼ of the way into the data?

• True

• False

Which one of the following is an average?

• Median

• Lower Quartile

• Upper Quartile

• Inter-quartile Range

What is the median of the following numbers? 5, 7, 3, 6, 10, 4, 4, 8, 9, 3

• 7

• 5

• 6

• 5.5

How much of the data is represented by the 'box' in a box plot?

• 10%

• 25%

• 50%

• 75%

Calculate the lower quartile of the following set of data: 6, 12, 3, 7, 9, 11, 5, 8, 6, 10, 11

• 6

• 6.5

• 11

• 8

Look at the box plot shown. What can you tell about the data?

• The median is the same as the upper quartile

• There is no upper quartile

• There is no maximum value

• The maximum value is the same as the upper quartile

Look at the box plot shown. What is the value of the lower quartile?

Look at the box plot shown. What is the value of the interquartile range?

25% of people surveyed in the box plot below watched TV for longer than ____ hours per week. Fill in the blank.

Look at the box plots shown. On average, who watches more TV per week?

• Boys

• Girls

• Neither