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The largest range of the four quartiles is from 21 to 46.īox & Whisker Plots Candy Sold Per Student 23 69 27 60 51 46 81 53 46 54 39 55 Independent Practice Problems: Twelve members of the music club sold candy bars as a fund-raiser. The graph shows that half of the students travel between 10 and 21 minutes. Then use it to describe how the data are spread. One-fourth of the players scored within this range.īox & Whisker Plots Independent Practice Problems: The table below shows the commute time from home to school for fifteen middle school students. The largest range of the four quartiles is from 731 to 894. Step 4: Find the median and the quartiles.īox & Whisker Plots Example 2:NHL Leading Scorers The graph shows that half of the players scored between 487 and 731 points. The scale should include the median, the quartiles, and the lower and upper extremes. Step 2: Find the Median, Quartiles, Extremes. Then use it to describe how the data are spread.īox & Whisker Plots Lower Quartile is Median of lower half = 487 Upper Quartile is Median of upper half = 731 Example 2:NHL Leading Scorers Step 1: Order the data from least to greatest. The table shows the ten all-time leading scorers in the National Hockey League through a recent season.One-fourth of the foods were within this range.īox & Whisker Plots Example 2:NHL Leading Scorers The largest range of the four quartiles is from 9 to 15. Step 4: Find the median and the quartiles.īox & Whisker Plots Example 1:Nutrition Facts The graph shows that half of the foods have between 3 and 9 grams of fat. Lower Extreme: 3 Upper Extreme: 19 Median: 9 3, 3, 5, 5, 7, 9, 9, 9, 10, 14, 15, 16, 18, 19īox & Whisker Plots Example 1:Nutrition Facts Step 3: Draw a number line.

Step 2: Find the Median, L/U Quartiles, and L/U Extremes. Make a box-and-whisker plot of the data.īox & Whisker Plots Lower Quartile is median of lower half = 5 Upper Quartileismedian of upper half = 15 Example 1:Nutrition Facts Step 1: Order the data from least to greatest.

The grams of fat per serving of items from the meat, poultry, and fish food group are shown in the table.

Even though they can be difficult to create, they can provide a great amount of important information.īox & Whisker Plots Item Fat (gm) Item Fat (gm) Bacon 9 Ham 14 Beefsteak 15 Pork Chop 19 Bologna 16 Roast Beef 5 Crabmeat 3 Salmon 5 Fish Sticks 3 Sardines 9 Fried Shrimp 10 Trout 9 Ground Beef 18 Tuna 7 Example 1:Nutrition Facts

- It allows you to see important characteristics of the data at a glance.

- Box and whisker plots use the median, upper and lower quartiles, and the extreme (least and greatest) values to summarize data.

Interquartile Range: the range of the middle half of a set of data UQ – LQ.īox & Whisker Plots Why Box & Whisker Plots:.

Lower Quartile:the median of the lower half of a set of data LQ.

Upper Quartile:the median of the upper half of a set of data UQ.

Lower Extreme:the smallest value in a set of data.

Upper Extreme:the greatest value in a set of data.

Box & Whisker Plot:a diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values.

What is the purpose of organizing data sets into a box and whisker plot?īox & Whisker Plots What is a Box & Whisker Plot: Lower Extreme (MIN) Lower Quartile (Q1) Median (Q2) Upper Quartile (Q3) Upper Extreme (MAX).

7.4.03Describe how the mean, median, mode, range, frequency distribution, and inter-quartile range of a set of data affect its graph.7.4.02Calculate, use, and interpret the mean, median, mode, range, frequency distribution, and interquartile range for a set of data.7.4.01Collect, organize, analyze, and display data (including box plots and histograms) to solve problems.