9-17 TEST - Unit 2 Descriptive Statistics

The table of frequency above represent the grades earned by 144 students in World History. 

What is the relative frequency of those who earned a B? Round to the nearest hundredth.

• $0.76$

• $0.22$

• $0.32$

• $0.44$

Tags

CCSS.8.SP.A.4

The table of frequency above represent the grades earned by 144 students in World History. 

What is the cumulative frequency of those who earned at least a C? Round to the nearest whole number.

•  $34$  

•  $64$ 

•  $110$ 

•  $144$ 

A baby furniture store has number a number of different dressers. The table shows the number of dressers and their heights.

Which histogram correctly represents the information in the given table?

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Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

A baby furniture store has number a number of different dressers. The table shows the number of dressers and their heights.

What is the best description for the shape of data?

• Skewed left

• skewed right

• symmetric

• uniform

Nine students were asked how many times each week they buy lunch at school. The results shown above.

Which of the following dot plots correctly represents this data?

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Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Nine students were asked how many times each week they buy lunch at school. The results shown above.

What is the shape of the data?

• Skewed right

• Skewed left

• Symmetric

• Uniform

The table above displays the result of a survey of car preferences of a sample of adults. Use the data in two-way frequency table above in selecting the correct interpretation of the conditional relative frequency  $\frac{135}{180}.$   

• 135 of the total number of people who prefer SUVs were females

• 135 out of  the 180 people surveyed prefer SUVs

• 135 out of the 180 females surveyed prefer SUVs

Tags

CCSS.8.SP.A.4

The table above displays the result of a survey of car preferences of a sample of adults. Use the data in two-way frequency table above in selecting the correct interpretation of the conditional relative frequency  $\frac{135}{156}.$   

• 135 of the 156 people who prefer SUVs were females

• 135 out of  the 156 females surveyed prefer SUVs

• Out of the 156 surveyed, 135 are females

Tags

CCSS.8.SP.A.4

Above are the boxplots representing two sets of data.

Select all the statements that correctly compare the two sets of data.

• The two distributions have the same shape.

• Both medians are between 60 and 70.

• At least 25% of both data sets are below 60.

• At least 25% of both data sets are above 80.

• The maximum of each data set is the same.

Tags

CCSS.7.SP.B.4

Jessica surveyed her classmates to find out how many posts the make, on average, on social media in a normal day. The following data set shows her results.

a. Find the value of the mean b. value of the median

c. value of the range d. IQR

• mean = 10.07
  median = 10
  range = 3
  IQR = 12

• mean = 10.07
  median = 10.07
  range = 12
  IQR = 12

• mean = 10.07
  median = 10
  range = 12
  IQR = 3

Tags

CCSS.6.SP.B.5C