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Reading & Analyzing Graphs Review

Reading & Analyzing Graphs Review. Misleading Graphs. Frequency Table. A frequency table shows the number of times each data item appears in an interval. The table should have the intervals in the first column, tally in the second and frequency in the third. Time Tally Frequency

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Reading & Analyzing Graphs Review

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  1. Reading & Analyzing Graphs Review

  2. Misleading Graphs

  3. Frequency Table A frequency table shows the number of times each data item appears in an interval. The table should have the intervals in the first column, tally in the second and frequency in the third. Time Tally Frequency 10-19 IIII 4 20-29 0 30-39 IIII 5 40-49 IIII 4 50-59 0 60-69 III 3

  4. Bar Graph • A bar graph is similar to a line plot. • A bar graph is a graph using bars to show data. • Bar graphs can be vertical or horizontal.

  5. Line Plot Example Spelling Test Grades • What is the mean? • What is the median? • What is the mode? • What is the range? 89 90 90 25

  6. The stem-and-leaf plot shows the lengths, in millimeters, of fish in a tank. • 4 9 • 5 7 7 9 • 6 1 2 4 4 7 8 8 9 • 7 6 8 • 4 Stem-and-Leaf Plot Example EXAMPLE 2 • What is the mean? • What is the median? • What is the mode? • What is the range? 66 64 57, 64, and 68 35

  7. Box and Whisker Plot Example Minutes spent on homework each night Find the following values: Minimum: Maximum: Range: Median: Lower Quartile: Upper Quartile: Interquartile Range: 25 95 95-25 = 70 75 65 90 90-65 = 25

  8. Skills Check! When you finish turn your paper over and put it on the corner of your desk. No talking. Practice: Measures of Center Review Worksheet.

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