Quartiles and Interquartile Range

What do quartiles split data up into?

• halves

• thirds

• fourths

• fifths

Tags

CCSS.6.SP.A.2

CCSS.6.SP.B.5

What is the first step to take when attempting to find IQR?

• Find the lower and upper quartile.

• Find the median.

• Put the list of numbers in order.

• Subtract the lower and upper quartile.

Tags

CCSS.7.EE.B.3

Find the median of plot B

• 30
• 14
• 28

What is the interquartile range of plot A?

• 6
• 8
• 15

What is the maximum value?

• 58
• 66
• 64

What is the minimum value?

• 64
• 58
• 66
• 60

Find the interquartile range using the following.
Minimum:  1
Q1:  3
Median:  5
Q3:  7
Maximum:  9

• 8
• 4
• 5
• 10

A measure of variation in a set of numerical data, it is the distance between the first and third quartiles of the data set.

• Interquartile Range
• Outliers
• First Quartile
• Third Quartile

What value is the lower quartile?

• 66
• 58
• 60
• 64

Which box and whisker plot has the highest median?

• Top plot
• Bottom plot