Range and Interquartile Range

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.6.SP.B.5C

Find the median, first quartile, third quartile, and interquartile range of the data.

32, 53, 72, 66, 47, 54, 49, 67, 71

• Median: 54

  First Quartile: 49

  Third Quartile: 67

  IQR: 18

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 21

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 22

• Median: 54

  First Quartile: 49

  Third Quartile: 69

  IQR: 20

Tags

CCSS.6.SP.B.5C

Find the IQR using the following data.

50, 60, 82, 86, 94, 110

• 60

• 84

• 34

• 50

Tags

CCSS.6.SP.B.5C

Find the range of the data.

16, 28, 6, 19, 21, 15, 22, 33, 17

• 18

• 27

• 30

• 12

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

The table shows the average monthly temperature for St. Louis. The Interquartile Range (IQR) is (a)   .

Tags

CCSS.6.SP.B.5C

If St. Louis has an IQR of 33 and San Francisco has an IQR of 6.5, what can you conclude about the temperature of the 2 cities?

Tags

CCSS.6.SP.B.5C

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 193
• 127
• 60
• 66

Tags

CCSS.7.NS.A.1C

What is the range of a data set?

• highest-lowest

• lowest-highest

• the middle

• the number that occurs most frequently

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1