Measures Of Variation

Which measure of variation is the difference between the maximum and minimum of the data?

• mean

• interquartile range (IQR)

• range

• median

This is used to describe the distribution of the data

• outlier

• range

• measures of variation

• quartile

What does this symbol represent?

• Population Standard Deviation
• Population Variance
• Sample Variance
• Sample Standard Deviation

What does this symbol represent?

• Population Variance
• Population Standard Deviation
• Sample Variance
• Sample Standard Deviation

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• 1
• 2
• 3
• 4

Four data sets are shown below.
Set 1: {10, 19, 38, 50, 51}
Set 2: {5, 21, 26, 39, 51}
Set 3: {9, 38, 50, 50, 51}
Set 4: {5, 28, 28, 28, 51}
Which data set has the largest standard deviation?

• Set 1
• Set 2
• Set 3
• Set 4

The first thing we do when we find the median is...

• add and divide

• nothing

• subtract each number

• order from least to greatest

What is a disadvantage of using the range as a measure of​ variation?

• It is hard to compute.

• It uses all entries from the data set.

• It uses only two entries from the data set.

What 5 items are found when finding the Measures of Variation?

• mean, median, mode, range, IQR

• median, first quartile, third quartile, range, mode

• median, first quartile , third quartile, IQR, range

• mode, IQR, range, mean, first quartile

What is the variance for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 47.47
• 102.01
• 52.77
• 81