Box & Dot Plots Review

Which 3 values can we find in a Box Plot summary?

• Range

• Interquartile Range

• Median

• Mode

• Mean

Compare the centers and spreads. 

•  Math has a higher median (center) and a wider spread.
•  Math has a higher median (center) and a smaller spread.
• Math has a lower median (center) and a smaller spread.
• Math has a lower median (center) and a wider spread.

What is the median?

• 62
• 58
• 66
• 60

Which box and whisker plot has the highest median?

• Top plot
• Bottom plot

6. Which city has a higher median?

• Millersburg
• Arcadia

What data value is the upper quartile (Q3)?

• 64
• 62
• 66
• 58

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8

Which interval shows the greatest number of pets?

• 15-19
• 0-4
• 5-9
• 10-14

Which data set shows a greater spread?

• Chess Club

• Checkers Club

• They have the same spread.

• You cannot tell from the box plots.

Describe the process of getting IQR from this graph- then tell us what it is!

• Write the data set from the graph, find the median by looking at the most middle number there- then you found your IQR- the IQR is 2!

• Write the data set from least to greatest. Cross of high and low numbers until you reach the middle, Find the upper and lower quartiles and their medians, Subtract (Q3-Q1) - that gives you your IQR- the IQR will be 2!

• Find the smallest number and the largest number! then subtract! The IQR is 4!

• Find the average of all the numbers! That will give you the IQR- the IQR is 1.8!