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1.3 – Five-Number Summaries and box plots

1.3 – Five-Number Summaries and box plots. Five-number summary. We can use a Five-Number Summary to describe data in a way that is easier to read. It uses five boundary points: The minimum (the smallest number) The first quartile (the median of the first half)

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1.3 – Five-Number Summaries and box plots

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  1. 1.3 – Five-Number Summaries and box plots

  2. Five-number summary • We can use a Five-Number Summary to describe data in a way that is easier to read. • It uses five boundary points: • The minimum (the smallest number) • The first quartile (the median of the first half) • The median (the middle number) • The third quartile (the median of the second half) • The maximum(the largest number)

  3. Michael Jordan interview Michael Jordan interview

  4. Example: michaeljordan’s total points • Example: Find the five-number summary for the number of points scored by the Chicago Bulls during the 1997 – 1998 season. First, order the data from smallest to largest: 167, 198, 288, 375, 376, 416, 663, 764, 841, 984, 2357 Minimum Median Maximum 1st Quartile (middle of 1st half) 3rd Quartile (middle of 2nd half) Box Plot or Box-and-Whisker Plot Can you find the five-number summary in the box plot?

  5. Investigation 1.3: pennies in a box • In investigation 1.3, we will see how to use the five-number summary to construct a box plot. • You will need your dot plot from Investigation 1.2: Making “Cents” of the Center • Just do Steps 1 – 6. • We will do Steps 7 and 8 as a class later.

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