Univariate Data Review

Which data set shows a greater spread?

• Chess Club
• Checkers Club
• They have the same spread.
• You cannot tell from the box plots. 

Which statement is true?

• Airplane A has a lesser median

• Airplane B has a greater range

• Airplane A has a less predictable flight length

• Airplane B a lesser IQR

How many students have 1,000 or more songs on their MP3 player?

• 5
• 16
• 10
• 4

Kerron gathers the heights of a random sample of 6th graders and 7th graders and displays the data in box plots. Which statement below is true?

• The median of the 7th grade sample is greater than the 6th grade sample.

• The 7th grade sample has greater variability.

• The ranges of both data samples are equivalent.

• The median of the 6th grade sample is greater than the 7th grade sample.

What data value is the upper quartile (Q3)?

• 64
• 62
• 66
• 58

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

What is the shape of the distribution?

• Skewed Left 
• Skewed Right
• Symmetric
• Bimodal

The prices at several different stores for a pair of shoes are shown below.
$78, $79, $81, $82, $83
Two days later, another store has the same shoes on sale for $65. How does the new price affect the data?

• Only the range was affected.
• The median increased, and the range increased.
• The mean increased, and the range increased.
• The mean decreased and the range increased.

Gabriella’s quiz grades are shown below.
88, 92, 92, 96, 98
Gabriella scored a 20 on her sixth quiz. What effect does this score have?

• The low score causes the median to increase.
• The low score causes the median to decrease.
• The low score causes the mean to increase.
• The low score causes the mean to decrease.

What is the interquartile range?

• 39

• 55

• 16

• 18