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Unit 1 Review Math 6

Unit 1 Review Math 6. Data Analysis. Question 1. What is the difference between a histogram and a bar graph?. A histogram uses intervals and the bars touch and a bar graph doesn’t use intervals and the bars do NOT touch. Question 2. Time Spent Listening to Music Adults X X X X X /

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Unit 1 Review Math 6

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  1. Unit 1 ReviewMath 6 Data Analysis

  2. Question 1 • What is the difference between a histogram and a bar graph? A histogram uses intervals and the bars touch and a bar graph doesn’t use intervals and the bars do NOT touch.

  3. Question 2 • Time Spent Listening to Music Adults X X X X X / Teens X X X X X X X Children X X X / X = 10 million hours • How many hours do Teens like to listen to music? A. 10 million B. 11 million C. 7 million D. 70 million D. 70 million

  4. Question 3 • What is data? Data is information, facts, or numbers that describe something.

  5. Question 4 What is the least frequent range of scores? $1,000- $1,999

  6. Question 5 • What is the difference between categorical and numerical data? Categorical data is categories; you must choose one or the other. Numerical data is numbers or gives a count.

  7. Question 6 What was the highest test grade? 99

  8. Question 7 What was the lowest test grade? 42

  9. Question 8 What was the difference between the highest and lowest test grade? (range) 99-42= 57

  10. Question 9 • How would you write 113, 116, 117 and 117 in a stem and leaf plot? Stems Leaves 11 3, 6, 7, 7

  11. Question 10 • Create intervals for the following number of Olympic Medals won by 27 countries: 8, 88, 59, 12, 11, 57, 38, 17, 14, 28, 28, 26, 25, 23, 18, 8, 29, 34, 14, 17, 13, 13, 58, 12, 97, 10, 9 Possible Answer: 1-10 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81-90 91-100

  12. Question 11 • What type of graph would be used to show how something changes over time? A. pictograph B. line graph C. bar graph D. histogram B. line graph

  13. Question 12 • What graph would you use to represent intervals of a range of data? A. pictograph B. pictograph C. bar graph D. histogram D. histogram

  14. Question 13 • If an X stands for 6 people on a pictograph, how many X’s would you need for 21 people? A. 2 B. 3 ½ C. 3 ¾ D. 4 B. 3 ½

  15. Question 14 • What type of graph can NOT be used for categorical data? A. Pictograph B. Bar Graph C. Circle Graph D. Stem and Leaf D. Stem and Leaf

  16. Question 15 • What type of graph is used most often in newspapers and magazines to compare data? A. histogram B. bar graph C. pictograph D. line graph C. pictograph

  17. Question 16 • Explain how data can be organized in grouped and ungrouped tables. Ungrouped data is data in which you see all values individually. Grouped data is data that is organized into a table showing frequencies.

  18. Question 17 • All graphs and table should include…….. A title and labels

  19. Question 18 X=1 family Families with Pets X X X X X X X X X X X X X X X X Number of Pets What label should go here?

  20. Question 19 X=1 family Families with Pets X X X X X X X X X X X X X X X X Number of Pets How many families have 4 or more pets? 4

  21. Question 20 Using the stem and leaf plot, what is the mode? 88

  22. Question 21 • Which central tendency is best used with categorical data? Mode

  23. Question 22 How many more is the interval of 40-59 compared to 0-19? 2

  24. Question 23 67, 82, 73, 42, 78, 86, 84, 99, 91, 94 What is the range for this set of data? 57

  25. Question 24 67, 82, 73, 42, 78, 86, 84, 99, 91, 94 What is the mean for this set of data? 79.6

  26. Question 25 67, 82, 73, 42, 78, 86, 84, 99, 91, 94 What is the median for this set of data? 83

  27. Question 26 • Choose a graph to represent the following data: Ages at a party: 10, 14, 13, 12, 10, 14, 14, 12, 11, 9, 11, 9, 15 • Why did you choose your type of graph? Answers may vary: Bar Graph, Pictograph, Stem and Leaf, Histogram, Line plot

  28. Question 27 How many students picked a 7, 8, or 9? 19

  29. Questions????

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