Identifying the Parts of a Box-and-Whisker Plot

The first step in creating a box-plot with a data set is to...

• find the mean

• list the numbers from least to greatest

• find the middle

• draw a rectangle

Each part of a box plot represents...

• 25% of the data

• 33% of the data

• 20% of the data

• 10% of the data

A box-plot is useful because it easily shows....

• the smallest , middle, and largest values

• mean, median, and mode

• all of the individual data values

• events that have taken place over time

What is the median of the data set?

• 80

• 167

• 122

• 98

What is the value of the upper extreme?

• 80

• 167

• 122

• 140

What is the value of the first quartile Q1 ?

• 2

• 3

• 4

• 6

What is the value of the third quartile Q3?

• 3

• 4

• 6

• 9

What does the data contained in the rectangular part of the box-plot represent?

• the middle 50%

• the lower half of the data

• the upper half of the data

• 25% of the data

What part of the data do the whiskers of a box-plot represent?

• the lowest and highest 25%

• the middle 50%

• the median

• the second quartile

In the video lesson, Mrs. Keegan said the first time she ever saw a box-and whisker plot was...

• In a meeting with her boss when she smiled and nodded her head pretending to know what it was

• In a college statistics course

• In a high school statistics course

• She still has not clue what a box-and-whisker plot is.