1. Calculate the meanand mean absolute deviationfor the data of Johnny’s test scores.

92, 96, 97, 83, 92, 58, 93, 88, 77, 48, 65, 80, 71

  1. Calculate the 5 number summary for the data of Johnny’s test scores.

92, 96, 97, 83, 92, 58, 93, 88, 77, 48, 65, 80, 71

  1. Calculate the IQR and range for the data: 1, 3, 5, 6, 6, 7, 11
  2. Calculate the IQR and range for the data: 11, 13, 25, 16, 6, 7, 21
  1. If I have a correlation coefficient of r = -.95, what type of correlation is that? ______
  1. If I have a correlation coefficient of r = 0.07, what type of correlation is that? ______
  1. Construct a two-way table from the following information:

A survey of 200 9th and 10th graders was given to determine what their favorite subject was. 72 said Math (50 which were freshmen), 38 said Social Studies (20 which were sophomores), and 40 freshmen and 50 sophomores said PE was their favorite.

Based on your table, answer the following questions:

a)What is the probability that a student surveyed is a freshman?

b)What is the probability that a student surveyed is a 10th grader who likes Math?

c)If a student likes Math, whatpercent are a freshman?

  1. Use the information to construct a two-way table.

Eloise surveys the students in her cafeteria and found that 38 males agree with the new cafeteria rules while 70 do not. There were 92 females surveyed and 41 of them agree with the new cafeteria rules.

Based on your table, answer the following questions:

a)What is the probability that a student surveyed is a male?

b)What is the probability that a student surveyed is a female who agrees with the new rules?

c)If a student agrees with the rules, whatpercent are male?

  1. Determine if the following situations represent a positive, negative, or no correlation.

a)Number of hours studying for the SAT and your score. ______

b)The distance you drive and the number of stars in the sky. ______

c)The temperature and the length of daylight hours for the day ______

  1. Tell whether the following situations are causation: (yes or no)

a)The number of boats on Lake Allatoona and the number of cars on the street _____

b)The hours you work and the money you make ______

c)The time spent studying and the A on the test ______

  1. The following table shows a person study hours versus their test scores.

Hours studied (x) / 2 / 5 / 1 / 0 / 4 / 2 / 3
Grade on test (y) / 77 / 92 / 70 / 63 / 90 / 75 / 84

a)Use your calculator to find the line of best fit for the data above. ______

b)What is the value of r? ______Is this a good fit? ______

c)Use the equation to predict the test grade for someone who studies 5.5 hours. ______

0 / 1 / 3 / 4 / 6 / 7
1000 / 610 / 220 / 132 / 45 / 25

a)Write an exponential regressionequation, rounding to 2 decimals. ______

b)What is the correlation coefficient? ______Is this a good fit? ______

c)Based on equation, what is the value of 10? ______

  1. Use the data to calculate the following 4, 12, 5, 7, 11, 3, 6, 12

Mean = _____ Median = ______IQR = ______MAD = ______

  1. Use the data to calculate the following 30, 35, 42, 15, 20, 87, a23

Mean = _____ Median = ______IQR = ______MAD = ______

  1. What type of graph do you use if I only want a summary of a large amount of data?
  2. What type of graph do I use if I need to know the shape of the data but not necessarily each data point?
  3. What type of graph do I use if I need to know the shape of the data and each point?
  4. What type of graph do I use if I want to group my data?
  5. What measure of center do I use if there is an outlier in my data?
  6. What measure of spread (variation) do I use if there is an outlier in my data?
  7. Susie found that her number of hours spent studying (x) and the grade she makes on the test (y) can be modeled by the equation y = 15x + 40. What do the 15 and 40 represent in this scenario?
  8. Joe found that his number of hours practicing golf (x) and his score (y) can be modeled by the equation y = -2x + 120. What do the -2 and 120 represent in this scenario?
  9. Is the data skewed? If so how?
  1. Is the data skewed? If so how?
  1. What type of correlation would you expect to find: the number of hours spent playing video games and the number of hours spent doing homework?
  2. What type of correlation would you expect to find: the temperature outside and the number of ice cream cones sold in the park?
  3. What are the frequencies called that are the intersection of like snowmobiles and like skateboards?
  1. What are the frequencies called that are totals along the edges?
  1. Use the mathematical calculations for outliers to determine the outlier limits for this data. Are there any outliers?

10.2, 14.1, 14.4. 14.4, 14.4, 14.5, 14.5, 14.6, 14.7, 14.7, 14.7, 14.9, 15.1, 15.9, 16.4

  1. Use the mathematical calculations for outliers to determine the outlier limits for this data. Are there any outliers?

21, 23, 24, 25, 29, 33, 49

  1. What type of correlation does this scatter plot show?
  1. What type of correlation does this scatter plotshow?