Algebra Statistics Review Retake

The dot plot shown below represents the number of pets owned by students in a class.

Which statement about the data is not true?

• The median is 3.

• The interquartile range is 2.

• The mean is 3.

• The data contain no outliers.

Christopher looked at his quiz scores shown below for the first and second semester of his Algebra class.

Semester 1: 78, 91, 88, 83, 94

Semester 2: 91, 96, 80, 77, 88, 85, 92

Which statement about Christopher’s performance is correct?

• The third quartile for semester 2 is greater than the third quartile for semester 1.

• The interquartile range for semester 1 is greater than the interquartile range for semester 2.

• The median score for semester 1 is greater than the median score for semester 2.

• The mean score for semester 2 is greater than the mean score for semester 1.

Find the Mean. 

• 5.8
• 5
• 5.6
• 6

Tags

CCSS.HSF-LE.A.1B

Find the IQR (interquartile range) using the following information.
Minimum:  77
Q1:  79.5
Median:  86.5
Q3:  90.5
Maximum:  99

• 86.5
• 22
• 90.5
• 11

Who has the least interquartile range?

•  Yardley Grocery
• Vindale Grocery

What is the minimum value?

• 64
• 58
• 66
• 60

Tags

CCSS.HSF.IF.B.4

How many total people were surveyed?

• 78

• 22

• 70

• 100

How many total have an MP3 player?

• 13

• 57

• 70

• 100

Tags

CCSS.HSA.CED.A.3

How many students scored between a 86 and a 90?

• 1

• 3

• 6

• 10

How many people watched between 6 and 10 hours of TV last week?

• 35

• 22

• 31

• 15