Measures of Spread Definitions

How do you find interquartile range?

• add the biggest and smallest numbers

• subtract the upper and lower quartiles

• subtract the biggest and smallest numbers

• add the upper and lower quartiles

What is the range?

• The sum of the largest and smallest number

• The number in the middle

• The difference between the largest and smallest number

• The number that appears most often

Which of the following is a measure of spread, or variability? (select all that apply)

• Interquartile Range

• Standard Deviation

• Mean

• Median

• Range

Which measure of variability should you use?

• IQR

• standard deviation

Which measure of variability should you use?

• IQR

• standard deviation

Which measure of spread should be used to describe the distribution?

• standard deviation

• interquartile range

• range

• median

Which measure of variability should you use?

• IQR

• standard deviation

Which measure of variability should you use?

• IQR

• standard deviation

The interquartile range (IQR) of a data set is the difference between the third and first quartiles. It represents the range of the middle half of the data.

• True

• False

Standard Deviation is a measure of spread, which represents the average of the distance between individual data values and the mean.

• True

• False