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Understanding One-Variable vs. Two-Variable Data Analysis

Learn the differences between one-variable and two-variable data sets, including examples and how to recognize each type using various charts and graphs.

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Understanding One-Variable vs. Two-Variable Data Analysis

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  1. One Variable vs. Two Variable Data

  2. One Variable Data One-variable data sets give measures of ONE ATTRIBUTE.

  3. Some Examples…….

  4. You can recognize one-variable situations when you see: • Tally charts • Frequency tables • Bar graphs • Histograms • Pictographs • Circle graphs

  5. Two Variable Data Two-variable data sets give measures of two attributes for each item in a sample.

  6. Some Examples…….

  7. You can recognize two-variable situations when you see….. • Ordered pairs • Scatter plots • Two-column tables of values

  8. One OR Two Variable Data? • Noah researches annual hours of sunshine in Canadian cities • A study compared the length of time children spend playing video games and the time they spend reading

  9. Fill in the blanks…… As population of a city increases, increases. As population of a city increases, decreases. As temperature increases, increases.

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