Statistics Practice

The histogram displays the heights of several students at a school.  Based on the graph, how many students are 65 inches or shorter? 

• 11
• 16
• 18
• 21

Tags

CCSS.2.MD.D.9

The box-and-whisker plot below shows the number of points each member of the middle school basketball team made during the game on Saturday.  What was the greatest number of points scored by a basketball player during the game on Saturday? 

• 4
• 6
• 7
• 8

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Which statement best describes the difference between data set 1 and data set 2 shown below?

• The median values are very similar, but the values in data set 2 are much more spread out since the interquartile range is larger. 
• The median values are very similar, but the values in data set 1 are much more spread out since the interquartile range is smaller. 
• The median value for data set 1 is larger, but the interquartile range is smaller, so the values in data set 1 are all larger than those in data set 2. 
• The median value for data set 2 is larger, but the interquartile range is smaller, so the values in data set 2 are all smaller than those in data set 1. 

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Jamie has math test scores of 65, 90, 75, and 93. Aaron has math test scores of 98, 88, 82, and 93. How do the mean and median of Jamie’s and Aaron’s test scores compare? 

• Aaron has a higher mean, but lower median test score than Jamie. 
• Jamie has a higher mean, but lower median test score than Aaron. 
• Jamie has a higher mean and median test score than Aaron.
  
• Aaron has a higher mean and median test score than Jamie. 

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

In an election, the median number of votes a candidate received in 6 towns was 300. Which statement MUST be true about this election? 

• The candidate received at least 300 votes in half of the 6 towns. 
• The candidate received exactly 300 votes in at least two of the towns. 
• The total number of votes the candidate received in the election was 1800. 
• The total number of votes received by all the candidates in the election was 1800. 

Tags

CCSS.7.EE.B.3

The prices for several items at two stores are given below.  Based on this data, which statement is true? 

• The standard deviation for Store X is greater than the standard deviation for Store Y by about 0.03. 
• The standard deviation for Store X is greater than the standard deviation for Store Y by about 0.3. 
• The standard deviation for Store X is less than the standard deviation for Store Y by about 0.03. 
• The standard deviation for Store X is less than the standard deviation for Store Y by about 0.3. 

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The table below shows the lengths of fences a company installed during a week.  Which statement is true? 

• The 275-foot fence caused the mean to be significantly lower than the median. 
• The 275-foot fence caused the median to be significantly lower than the mean. 
• The 2,250-foot fence caused the mean to be significantly greater than the median. 
• The 2,250-foot fence caused the median to be significantly greater than the mean. 

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Mr. Cook gave a history quiz last week. The scores from his class are shown below.  78, 82, 91, 75, 76, 86, 90, 88, 70, 72.  A student was absent on the day of the quiz and scored a 50 on the make-up quiz. What is the approximate difference in the class’ mean score before and after the make-up quiz? 

• 3 points 
• 4 points 
• 5 points 
• 6 points 

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Linda’s quiz scores are 95, 88, 98, 92, 100, and 50. If the outlier is removed, how is the shape of the distribution of the scores affected? 

• The distribution will become skewed right. 
• The distribution will become skewed left. 
• The distribution will become more normal. 
• The distribution will not change. 

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

Judy recorded the low temperatures at Clear Lake for ten days in May. She made the box-and- whisker plot to display her data.  Which value defines the upper quartile of the temperatures? 

• 49
• 50
• 51
• 52

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5