Quartiles and IQR

Quartiles and IQR

Chapter 9: Statistical Measures

Quartiles

Interquartiles Range (IQR)

Order the data from least to greatest.

Write it down on a whiteboard or in your spiral as well.

20, 12, 14, 22, 18, 21, 24, 15

Math Response

Find the median of the data.

12, 14, 15, 18, 20, 21, 22, 24

Type answer here

Correct Answer: 19

Deg^°

Rad

Math Response

Find the first quartile of the data.

12, 14, 15, 18, 20, 21, 22, 24

Type answer here

Correct Answer: 14.5

Deg^°

Rad

Math Response

Find the third quartile of the data.

12, 14, 15, 18, 20, 21, 22, 24

Type answer here

Correct Answer: 21.5

Deg^°

Rad

Math Response

Find the interquartile range of the data.

12, 14, 15, 18, 20, 21, 22, 24

Type answer here

Correct Answer: 7

Deg^°

Rad

Order the data from least to greatest.

Write it down on a whiteboard or in your spiral as well.

37, 28, 30, 40, 31, 27, 33, 42, 43

Math Response

Find the median of the data.

27, 28, 30, 31, 33, 37, 40, 42, 43

Type answer here

Correct Answer: 33

Deg^°

Rad

Math Response

Find the first quartile of the data.

27, 28, 30, 31, 33, 37, 40, 42, 43

Type answer here

Correct Answer: 29

Deg^°

Rad

Math Response

Find the third quartile of the data.

27, 28, 30, 31, 33, 37, 40, 42, 43

Type answer here

Correct Answer: 41

Deg^°

Rad

Math Response

Find the interquartile range of the data.

27, 28, 30, 31, 33, 37, 40, 42, 43

Type answer here

Correct Answer: 12

Deg^°

Rad

Math Response

The table shows the number of song downloads a group of friends made on Saturday.

Find the range of the number of song downloads.

Type answer here

Correct Answer: 10

Deg^°

Rad

Open Ended

Interpret the range.

The range of song downloads vary by no more than ____________.

Math Response

The table shows the number of song downloads a group of friends made on Saturday.

Find the interquartile range of the number of song downloads.

Type answer here

Correct Answer: 6

Deg^°

Rad

Open Ended

Interpret the interquartile range.

The middle half of the song downloads range vary by no more than ____________.