Ch 1 Review Questions

1. Which type of graph should be used to graph RBV students’ favorite TV shows? A Histogram B Box and Whisker Plot C Stemplot D Bar Chart E Timeplot

1. Which type of graph should be used to graph RBV students’ favorite TV shows? A Histogram B Box and Whisker Plot C Stemplot D Bar Chart E Timeplot

a) Write down the 5# Summary for the following sample of test scores: 78 100 84 88 92 77 90 72 85 80 73 55 b) Sketch a boxplot for the data

a) Write down the 5# Summary for the following sample of test scores: 78 100 84 88 92 77 90 72 85 80 73 55 Min=55 Q1 =75 Med=82 Q3=89 Max=100 b) Sketch a boxplot for the data

3. Which of the following is a resistant statistic? A Mean B Standard Deviation C Variance D IQR E None of the above are resistant

3. Which of the following is a resistant statistic? A Mean B Standard Deviation C Variance D IQR E None of the above are resistant

Number of Law and Order Episodes Watched per Week * 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Number of Law and Order Episodes Watched per Week 4. Based on the dotplot, which of the following are true? A There are two outliers, 9 and 13 B The mean will be higher than the median C The mean will be lower than the median D The IQR is 13 E Both A and B are true

Number of Law and Order Episodes Watched per Week * 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Number of Law and Order Episodes Watched per Week 4. Based on the dotplot, which of the following are true? A There are two outliers, 9 and 13 B The mean will be higher than the median C The mean will be lower than the median D The IQR is 13 E Both A and B are true

5. Give an example of a data set that will be skewed to the left. 6. Give an example in words of a distribution that will be skewed to the left.

7. Suppose you are working at Sea World and your boss decides to give your whole department a $1 per hour raise. What will happen to the median hourly wage for your department? A It will remain the same B It will increase by $1 C It will increase by $1 x hrs worked D It will raise, but we cannot tell by how much without given the original wages.

7. Suppose you are working at Sea World and your boss decides to give your whole department a $1 per hour raise. What will happen to the median hourly wage for your department? A It will remain the same B It will increase by $1 C It will increase by $1 x hrs worked D It will raise, but we cannot tell by how much without given the original wages.

8. Suppose you are working at Sea World and your boss decides to give your whole department a 10% per hour raise. What will happen to the standard deviation of the hourly wage for your department? A It will remain the same B It will increase by 10% C It will increase by D It will decrease E It cannot be determined without knowing the original wages.

8. Suppose you are working at Sea World and your boss decides to give your whole department a 10% per hour raise. What will happen to the standard deviation of the hourly wage for your department? A It will remain the same B It will increase by 10% C It will increase by D It will decrease E It cannot be determined without knowing the original wages.

9. A teacher does a survey of the number of minutes students study the night before a test. She creates an ogive for the survey data that has points (10, 3%), (30, 28%), (45, 54%) and (60, 75%). Which of the following are true? A More than half the class studies for 45 min. B More than half the class studies at least 45 min.. C 28% of the class students studies for a half an hour. D The first and third quartiles can be determined. E 21% of the class studies for 60 minutes.

9. A teacher does a survey of the number of minutes students study the night before a test. She creates an ogive for the survey data that has points (10, 3%), (30, 28%), (45, 54%) and (60, 75%). Which of the following are true? A More than half the class studies for 45 min. B More than half the class studies at least 45 min.. C 28% of the class students studies for a half an hour. D The first and third quartiles can be determined. E 21% of the class studies for 60 minutes.

10. Based on the Major League Baseball data on the right, for the number of wins in each League (National and American), which of the following is false? National American 6 4 993 5 14899 974310 57 996430 7 012578 8 6 5 = 65 A The range for the NL is smaller than the AL range B The National League data is skewed right C There are two less teams in the AL than the NL D The median of the AL is 68.5 E The team with the most wins is in the AL; the team with the least amount of wins is in the NL

10. Based on the Major League Baseball data on the right, for the number of wins in each League (National and American), which of the following is false? National American 6 4 993 5 14899 974310 57 996430 7 012578 8 6 5 = 65 A The range for the NL is smaller than the AL range B The National League data is skewed right C There are two less teams in the AL than the NL D The median of the AL is 68.5 E The team with the most wins is in the AL; the team with the least amount of wins is in the NL