U7 - Statistics Practice (Dot Plots,Histograms)

The table on the left shows the number of customers that visit a store at different times of the day.

Which histogram correctly displays the given data?

• 
• 
• 
• 

Tags

CCSS.6.SP.A.2

CCSS.6.SP.B.4

This histogram shows the ages of the members of a community gym.

Question: How will the mean age of members at the community gym change if the outlier in the data is removed?

• The mean age of members will increase.

• The mean age of members will decrease.

• The outlier does not affect the mean, so the mean age of members will not change.

• There is no outlier in this data set, so the change in the mean age of members cannot be determined.

Tags

CCSS.6.SP.A.1

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Mr. Morris gave his algebra class a test, the results of which are listed below.

68, 92, 74, 75, 86, 90, 92, 81, 60, 82, 77, 80

Shania was absent on the day of the test and had to take the test on a date after the scores were first posted. She earned a score of 99. Which measure of the class's test results did Shania's score most change?

• Interquartile Range (IQR)

• Mean

• Median

• Range

The ages of the US Presidents that were inaugurated during the 1900s are given below.

42, 51, 56, 55, 51, 54, 51, 60, 62, 43, 55, 56, 61, 52, 69, 64, 46

Look at the box-and-whisker plot of these data below. What, if anything, is wrong with this box-and-whisker plot?

• The value of Q1 is incorrect.

• The median is incorrect.

• The value of Q3 is incorrect.

• The box-and-whisker plot is correct.

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Ms. Bonner’s Weight Lifting class is recording their maximum weights they lift for repetitions. The students’ results are listed.

Calculate the mean for each class period. Which class has the highest mean for one repetition maximum (1RM)?

• period 1

• period 2

• period 3

• period 4

Which of these correlations represents causation?

• As the sales of a product increase, its price increases.

• The weight of a person increases with an increase in the person’s height.

• As the speed of a vehicle increases, the time taken to cover a distance decreases.

• As the sales of ice cream in the summer increase, sales of sunglasses at a store also increase.

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.C.9

The table displays the enrollment of freshmen taking Algebra 1, Geometry, or Algebra 2.

Some of the information is missing. The total number of girls enrolled is equal to the number of boys. There are twice as many boys enrolled in Algebra 1 as boys enrolled in Geometry.

Based on this information, which statement is correct?

• There are 68 boys enrolled in Algebra 1.

• There are 12 boys enrolled in Algebra 2.

• There are 92 girls enrolled in Algebra 1.

• There are 160 students enrolled in both Algebra 1 and Geometry.

Student enrollment in world languages is provided in the two-way frequency table.

Based on the information provided, determine the marginal relative frequency of students taking French.

• 20%

• 30%

• 40%

• 80%

The scatter plot represents the test scores of 21 students and the number of hours they studied.

Which function best fits the data?

• y = 7x + 41

• y = 41x + 7

• y = 6x + 20

• y = 20x + 6

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

Lovell recorded the number of tickets and hotdogs sold at King Stadium. He listed the sales in the table.

Based on the data, Lovell determined that the correlation coefficient was 0.993. Which statement best describes the correlation between the number of tickets and hotdogs sold at King Stadium?

• There is a weak linear correlation.

• There is a strong linear correlation.

• There is a weak nonlinear correlation.

• There is a strong nonlinear correlation.