1. 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Colors that end in “urple” Countries Between Mexico and Canada Sounds that kitties make If you were a hot dog and you were hungry, would you eat yourself? Potent Potables

2. Graphs & Populations 100 (Question) Identify the population, sample and variable in the following sentence. One spoonful of chili is tasted before serving.

3. Graphs & Populations 100 (Answer) Population: pot of chili Sample: one spoonful Variable: taste of chili

4. Graphs & Populations 200 (Question) Look at the holiday histogram. In which month do the most national holidays occur?

5. Graphs & Populations 200 (Answer) September

6. Graphs & Populations 300 (Question) 75 bears are tagged and released. Two weeks later, 50 bears are caught and 15 have tags. Estimate the bear population.

7. Graphs & Populations 300 (Answer) 15/50 = 75/x 250 bears

8. Graphs & Populations 400 (Question) Look at the circle graph. If Mr. Martin makes $3000 per month, how much does he pay for rent?

9. Graphs & Populations 400 (Answer).38 * 3000 Rent is $1140

10. Graphs & Populations 500 (Question) In the student senate elections, 1700 students voted. If this is 80% of the student body, how many students are in the school?

11. Graphs & Populations 500 (Answer) 1700/80 = x/100 2125 students

12. Measures of Center & Spread 100 (Question) Look at the stem-and-leaf plot about newspapers. Determine the mode.

13. Measures of Center & Spread 100 (Answer) Mode is 23

14. Measures of Center & Spread 200 (Question) Look at the stem-and-leaf plot about newspapers. Determine the median.

15. Measures of Center & Spread 200 (Answer) Median value is the average of the 25 th and 26 th values. The median is 24.5

16. Measures of Center & Spread 300 (Question) Look at the stem-and-leaf plot about newspapers. Determine the range.

17. Measures of Center & Spread 300 (Answer) 120 - 3 = 117 Range is 117.

18. Measures of Center & Spread 400 (Question) Determine the mean of the following set of numbers. 12, 15, 8, 1, 35

19. Measures of Center & Spread 400 (Answer) (12 + 15 + 8 + 1 + 35)/5 Mean is 14.2

20. Measures of Center & Spread 500 Question Look at the stem-and-leaf plot about newspapers. If the IQR=34, Q1=12 and Q3=46, determine which values are outliers using the 1.5 X IQR method.

21. Measures of Center & Spread 500 Answer 1.5 X IQR = 51 Q3 + 1.5 X IQR = 97 Q1 – 1.5 X IQR = -39 106 and 120 are outliers.

22. Box Plots 100 Question Look at the box plots. Estimate the IQR for the afternoon newspapers.

23. Box Plots 100 Answer Q3 – Q1 = IQR IQR is about 30 newspapers.

24. Box Plots 200 Question Look at the box plots. Determine the five number summary for the morning newspapers.

25. Box Plots 200 Answer Minimum: 0 Q1: 5 Median: 8 Q3: 12 Maximum: 52

26. Box Plots 300 Question Look at the box plots. What percent of states have more than 37 afternoon newspapers?

27. Box Plots 300 Answer Because 37 is the upper quartile, 25% of states have more than 37 newspapers.

28. Box Plots 400 Question Look at the box plots. The middle 50% of morning newspapers are between what two numbers?

29. Box Plots 400 Answer The middle 50% of the data is between the lower and upper quartiles. This interval is between about 5 and 12.

30. Box Plots 500 Question Look at the box plots. Which paper would have a larger standard deviation? Explain.

31. Box Plots 500 Answer Afternoon papers because they have the larger range and IQR, so the squared deviations would be large for the outlier values.

32. ∑ & slope 100 Question Look at the data set w 1 to w 9. Calculate the following: 6 ∑w i i = 1

33. ∑ & slope 100 Answer Add the first 6 terms in set w. 8

34. ∑ & slope 200 Question Look at the world population data. What was the average rate of change between 1950 and 1989? (write your answer in millions)

35. ∑ & slope 200 Answer (5.234 - 2.513)/(1989 - 1950) The average rate of change between 1950 and 1989 is 69.77 million people per year.

36. ∑ & slope 300 Question Look at the data set w 1 to w 9. Calculate the following: 7 ∑w i 2 i = 4

37. ∑ & slope 300 Answer Square the fourth through seventh terms and then add them up. 130

38. ∑ & slope 400 Question Look at the data set w 1 to w 9. Calculate the following: 7 (∑w i ) 2 i = 4

39. ∑ & slope 400 Answer Add the fourth through seventh terms and then square the number. 64

40. ∑ & slope 500 Question Write the summation notation for the mean of the following data set: {q 1, q 2, …, q 10 }

41. ∑ & slope 500 Answer 10 ∑q i i = 1 10

42. Percentiles & Histograms 100 Question Look at the batting average histogram. Which bar represents the mode?

43. Percentiles & Histograms 100 Answer Mode is.275 to.299 bar because it is the tallest.

44. Percentiles & Histograms 200 Question Look at the batting average histogram. Which bar represents the median?

45. Percentiles & Histograms 200 Answer Median is contained in the.275 to.299 bar.

46. Percentiles & Histograms 300 Question Look at the stem-and-leaf plot about grades. What percentile corresponds to the grade of 100?

47. Percentiles & Histograms 300 Answer 25/25 * 100 100 th percentile

48. Percentiles & Histograms 400 Question Look at the stem-and-leaf plot about grades. What percentile corresponds to the score 86?

49. Percentiles & Histograms 400 Answer 12/25 * 100 48 th percentile represents a grade of 86.

50. Percentiles & Histograms 500 Question Look at the stem-and-leaf plot about grades. What score represents the 24 th percentile?

51. Percentiles & Histograms 500 Answer x/25 =.24 x = 6 th lowest number A grade of 73 represents the 24 th percentile.