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Warm-up

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  1. Warm-up Obj: Read and interpret data displayed in a histogram

  2. Histograms – 1.4 Obj: Read and interpret data displayed in a histogram

  3. Objective • Read and interpret data displayed in a histogram. Obj: Read and interpret data displayed in a histogram

  4. Bar Graphs Vs. Histograms • Topics vs. numbers • Bars don’t touch vs. bars do touch Obj: Read and interpret data displayed in a histogram

  5. Definition • Bin Width – The # you count by on the x-axis. • Insert pic Obj: Read and interpret data displayed in a histogram

  6. Example 1 • How many values are in the data set? • What is the bin width? • How many trees are under 70 feet high? • How many trees are between 70 and 80 feet high? Obj: Read and interpret data displayed in a histogram

  7. Example 2 • Draw a histogram of the data below using 5 bins: (1, 6, 8, 8, 10, 11, 12, 13, 20, 22, 22, 25) • Now make a histogram using only 3 bins: Obj: Read and interpret data displayed in a histogram

  8. Example 3 • How many students took the test? • How many students scored less than 60%? • How many students scored over 60% but less than 80%? Obj: Read and interpret data displayed in a histogram

  9. Homework • 1.4 worksheet • Problems 1, 2, 4a Obj: Read and interpret data displayed in a histogram