Understanding Measures of Spread

Which of the following is NOT a measure of spread?

• Range

• Mean

• Interquartile Range (IQR)

• Standard Deviation

Tags

CCSS.6.SP.A.3

• Both have the same range

• Cannot be determined

Tags

CCSS.4.MD.B.4

The interquartile range (IQR) is calculated as:

Tags

CCSS.6.SP.B.5C

Which measure of spread is most affected by extreme values (outliers)?

• Interquartile Range (IQR)

• Standard Deviation

• Range

• Median

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Given two data sets with the same mean but different standard deviations, what does the data set with the higher standard deviation indicate?

• The data values are closer to the mean

• The data values are more spread out from the mean

• The data set has more values

• The data set has a higher mean

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Which of the following data sets has the smallest standard deviation?

If two data sets have the same range but different interquartile ranges (IQR), what does this tell you?

• Both data sets are equally spread out

• The data set with the larger IQR has more data spread in the middle 50%

• The data set with the smaller IQR has more outliers

• The data set with the larger IQR has more outliers

Tags

CCSS.6.SP.B.5C