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Unit 1 Review

Unit 1 Review. Data Analysis. Question 1. What is the difference between a histogram and a bar graph?. A histogram uses intervals and a range of values and a bar graph doesn ’ t use ranges. Question 2. Time Spent Listening to Music Adults X X X X X / Teens X X X X X X X

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Unit 1 Review

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  1. Unit 1 Review Data Analysis

  2. Question 1 • What is the difference between a histogram and a bar graph? A histogram uses intervals and a range of values and a bar graph doesn’t use ranges.

  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 most frequent score? 40 - 50

  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 values.

  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

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

  13. Question 12 • What graph would you use to represent intervals of a range of data? A. histogram B. pictograph C. bar graph D. line graph A. 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. Stem and Leaf C. Histogram D. Bar Graph B. 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

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