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Heartbeats – period 5

This document provides an in-depth analysis of data utilizing key statistical measures including mean, median, and mode. It features various graphical representations such as line plots, frequency tables, stem-and-leaf plots, and box-and-whisker plots. Key elements include steps to find quartiles and identify outliers, along with a histogram of the data. Insights into the advantages of different graph types and the implications of varying vertical axis values are discussed, along with inquiries on how graphs can inform data interpretation.

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Heartbeats – period 5

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  1. Heartbeats – period 5 October 12, 2009

  2. Numbers – in order

  3. Mean, Median, Mode: • Mean: • Median: • Mode: 80.1 80 72, 88, 92

  4. Line Plot 52 60 66 72 76 80 84 88 92 100 120

  5. Frequency Table

  6. Stem and Leaf Plot stem leaf 5 2 6 0, 6 7 2, 2, 2, 6, 6, 6 8 0, 0, 4, 8, 8, 8 9 2, 2, 2 10 0 12 0

  7. Box and Whisker Plot 80 72 • Find Q1 *Find Q2 • Find Q3 *Outliers? • Highest? *Lowest? Yes, 120 90 100 52 * 52 72 80 90 120 100

  8. Histogram • Range: 120– 52= 68 68/3 = 22.6667-> 23

  9. Why would a line graph be difficult to construct using our data? • What changed when the graph began at a different value on the vertical axis? • Will the mean always be higher than the median? • Looking at all of the graphs, which graph do you think gives you the most information? The least? • What is an advantage of a box and whisker plot?

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