Descriptive Statistics Review

Which of the following isn't a measure of center?

• mean

• range

• median

• mode

Which of the following isn't a measure of spread?

• mean

• range

• standard deviation

• interquartile range

When there are outliers present, we refer to this as

• multimodal

• skew

• symmetric

• normal

If a data distribution has roughly the same left tail as it does right tail, we call this

• symmetric

• outliers

• positively skewed

• bimodal

If a data distribution has one peak in the center and is symmetrical (looks like a bell) we call this a

• uniform distribution

• parabolic distribution

• skewed distribution

• normal distribution

When a data distribution has a small range it probably has a small

• median

• mode

• standard deviation

• outlier

Variance and standard deviation are both advanced ways of calculating

• center

• outliers

• consistency/predictability

• skew

Calculate the median:

3 9 8 11 4 3 9

• 3

• 8

• 4

• 9

Calculate the median:

192 239 91 100 130 83

• 100

• 115

• 130

• 192

Calculate the mean:

9 23 8 7 11

• 11.6

• 9

• 11

• 15