Unit 6 Review Measures of Central Tendency, Measures of Variation Displaying Data.

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Unit 6 Review Measures of Central Tendency, Measures of Variation Displaying Data

Question 1a What does 30 represent on the box plot?

Question 1b What does 78 represent on the box plot?

Question 1c What does 105 represent on the box plot?

Question 2a What is the interquartile range of this box plot?

Question 2b What is the interquartile range of this box plot?

Question 2c What is the interquartile range of this box plot?

Question 3a Which of the following is a statistical question? a)How old are you? b)How old are the students who came to the Snow Ball? c)How many boys are in Dr. Brantley’s 3 rd period class? d)What is your homeroom number?

Question 3b Which of the following is NOT a statistical question? a)How old are you? b)How old are the students who came to the Snow Ball? c)How many hours per week does each student in Dr. Brantley’s math classes study? d)How much wood would a woodchuck chuck if a woodchuck could chuck wood?

Question 3c Which of the following is a statistical question? a)How old is your hamster? b)How many books are in Dr. Brantley’s classroom? c)What is the sum of the digits of your phone number? d)How old are the teachers at SEMS?

Question 4a How many students took this test?

Question 4b How many students scored less than 71?

Question 4c How many students scored higher than 80?

Question 5a How many people stayed in the hotel?

Question 5b Which age had the most people staying in the hotel?

Question 5c How many people who stayed in the hotel are older than 30?

Question 6a The mean for the data in the dot plot is 2.86 and the median is 3. What statement best describes the data? a)Most students have 3 children in their family. b)There are two modes in this set of data. c)The data is clustered around 1, 4 and 5. d)There is a gap in the data.

Question 6b The mean for the data in the dot plot is 1.73 and the median is 2. What statement best describes the data? a)Most students have 2 or fewer brothers and sisters. b)There are two modes in this set of data. c)The data is clustered around 0 and 1. d)There is a gap in the data.

Question 6c The mean for the data in the dot plot is and the median is 70. What statement best describes the data? a)Most students have did not pass this test (HINT: passing is 70 or higher). b)There are two modes in this set of data. c)The data is clustered around 70 and 80. d)There is a gap in the data.

Question 7a What is the median of this set of data?

Question 7b What is the median of this set of data?

Question 7c What is the median of this set of data?

Question 8a What is NOT true about the data in this dot plot? a)The median is 2 children. b)There are two modes. c)The data is clustered around 2 children and 3 children. d)The middle of the data is 4 children.

Question 8b What is NOT true about the data in the dot plot? a)The range is 4. b)There are two modes. c)The data is clustered from 6-7. d)The middle of the data is 6.5.

Question 8c What is NOT true about the data in the dot plot? a)The range is 90. b)The mode is 30. c)The data is clustered from d)The middle of the data is 30.

Question 9a Which of the following in NOT a statistical question? a)What is the temperature today in Guyton, GA? b)What is the average height of 6 th graders in Dr. Brantley’s math classes? c)How many hours a week do 6 th graders study? d)How many hours a week do 6 th graders play video games?

Question 9b Which of the following in NOT a statistical question? a)How old are the students at SEMS? b)How old are the math teachers at SEMS? c)How old are the sixth grade teachers at SEMS? d)How old is Dr. Brantley?

Question 9c Which of the following in NOT a statistical question? a)How many days a week do students at SEMS exercise? b)How many days a week are students at SEMS absent? c)On average, many people in the United States have own a car? d)Do you like math?

Question 10a Students who scored over 70 passed the test. How many students passed this test?

Question 10b Students who scored less than 71 did not pass this test. How many students did NOT pass this test?

Question 10c Students who scored more that 80 got 15 extra minutes incentive time. How may students get extra incentive time?

Question 11a What is the mean of this set of data?

Question 11b What is the mean of this set of data?

Question 11c What is the mean of this set of data?

Question 12a How many students have bedtimes before 9:00?

Question 12b How many students participated in the survey?

Question 12c How many students have bedtimes after 9:30?

Question 13a-Constructed Response practice Use the box and whisker plot to answer the following questions: 1) What is the interquartile range of each graph? 2) What is the significance of 25 for Angela and 32 for Carl? 3) What conclusions can be drawn from the plots? In other words, how do Angela’s and Carl’s sales compare? Explain.

Question 13b-Constructed Response practice Use the box and whisker plot to answer the following questions: 1) What is the interquartile range of each graph? 2) What is the significance of 57 for females and 70 for males? 3) What conclusions can be drawn from the plots? In other words, how do the weights of males and females compare? Explain.

Question 13c-Constructed Response practice Use the box and whisker plot to answer the following questions: 1) What is the interquartile range of each graph? 2) What is the significance of 95 for Bookstore A and 90 for Bookstore B? 3) What conclusions can be drawn from the plots? In other words, how do the prices of Bookstore A and Bookstore B compare? Explain.