2. Statistics and Probability - 1 What is the median of the data set? 2, 4, 2, 5, 6, 2, 5, 7, 8, 9, 11, 4, 6 a.2 b.5.5 c.5 d.6

3. Which one of the following statements is not true about the graph to the right? a.The IQR is 25 b.The range is 35 c.The difference between the upper extreme and Q3 is 10 d.The difference between the lower extreme and Q1 is 5 Statistics and Probability - 2

4. Statistics and Probability - 3

5. Use the box and whisker plot to decide which statement is false. a.The range in salaries is equal. b.The median salary for business is greater than the median salary for law c.The median salary for law is greater than the first quartile for business salaries. d.The third quartile for business salaries is equal to the upper extreme for law salaries. Statistics and Probability - 4

6. Use the dot plot to choose the statement that is true. a.80 people responded to the survey. b.90 people responded to the survey c.18 people responded to the survey d.It is not possible to tell how many people responded to the survey. Statistics and Probability - 5

7. Statistics and Probability - 6 Use the histogram to choose the true statement. a.More people scored between 80 and 100 points than any other interval. b.The interval with the lowest frequency was between 40 and 60 points. c.The interval with the highest frequency is between 60 and 80 points. d.The data is symmetrical.

8. Use the histogram to choose the statement that is false. a.The mode of the data set is 3. b.The data is not symmetrical. c.There is a peak in the data. d.There is a gap in the data between 4 and 6. Statistics and Probability - 7

9. Find the mean of the data set. Round the answer to the closest hundredth. {13, 17, 16, 14, 15, 13, 12, 14, 11} a.13.80 b.13.89 c.13.88 d.13.90 Statistics and Probability - 8

10. Below are points scored by 6 th grade students at a bowling party. Use the data to find the error in the frequency table. Bowling Scores Frequency Table 1308765147 10155111120 70123114132 Statistics and Probability - 9 Points ScoredFrequency 55 – 854 86 – 1164 117 - 1475 Which statement best describes the error in the data? a.There is an error in the interval for 55 to 85 points. b.There is an error in the interval for 86 to 116 points. c.There is an error in the interval for 117 – 147 points d.There is no error

11. Statistics and Probability - Answers 1.C 2.A 3.D 4.C 5.B 6.C 7.D 8.B 9.A