Understanding Box-and-Whisker Plots

What tool does the ecologist use to map the ages of the trees?

• Histogram

• Line Graph

• Pie Chart

• Box-and-Whisker Plot

What is the range of tree ages in the survey?

• 50 years

• 42 years

• 21 years

• 8 years

How do you calculate the range in a box-and-whisker plot?

• Multiply the highest and lowest data points

• Add the highest and lowest data points

• Subtract the lowest data point from the highest data point

• Divide the highest data point by the lowest data point

What is the median age of the trees in the forest?

• 8 years

• 21 years

• 33 years

• 50 years

What does the median represent in a box-and-whisker plot?

• The oldest tree age

• The middle value where half the ages are less and half are more

• The average age of all trees

• The youngest tree age

What is the first quartile (Q1) in a box-and-whisker plot?

• The range of the data

• The median of the lower half of the data

• The median of the entire data set

• The median of the upper half of the data

How many quartiles are there in a box-and-whisker plot?

• 2

• 3

• 5

• 4

What does the box in a box-and-whisker plot represent?

• The interquartile range (IQR)

• The median value

• The total number of data points

• The range of the data

Tags

NGSS.MS-PS3-1

What is the significance of the whiskers in a box-and-whisker plot?

• They show the median value

• They show the total number of data points

• They represent the interquartile range

• They indicate the spread of all the data points

Where is the median located in relation to the box in a box-and-whisker plot?

• At the left end of the box

• In the middle of the box

• At the right end of the box

• Outside the box