Ready, Set, Graph!

Kastren Dubose finds the median, mode, and mean of his set of "Skittle data".

After studying the chapter on statistical graphing, Mrs. Bradley's seventh grade Math classes participated in a statistics lab. Each student was given a snack size bag of Skittles to use in the exercise.

The students were asked to make a physical bar graph according to the color of the Skittle on a paper towel. The students then collected and recorded their own data based on the Skittle's color.

Each student had to draw a line plot and bar graph from their collected data. Data was then collected from the entire class. They were asked to find the mean, median, and mode for this set of data for each color of Skittle from the entire class' data. The students were given another set of numbers that were used to make a stem-andleaf plot. This lab was used as a review for a test on statistical graphing. Now after doing this exercise, the students were ready, set, and they were graphing.

We continued using the concepts developed from the chapter on graphing to do the "Graveyard Project." The students were asked to calculate the ages of 20 men and 20 women at the time of their death. They used that information to complete a frequency table for both the men and the women.

They also were asked to draw a double bar graph comparing the ages of the men and women at the time of their death. They even learned that there were actual statisticians whose job it is to research and keep this type of data. We also collaborated with our English department, where they are learning computer techniques, to develop an excel spreadsheet displaying the same type of data.

We also used our Alabama Math, Science, and Technology (AMSTI) kits to graph the "WUMPS." We used the dot paper and calculated the ordered pairs to graph five different members of the WUMP family. This activity was done after we worked on coordinated graphing in our math books. The students enjoyed this type of graphing.

They discussed the similarity of the five figures. We also discussed their differences. We found the scale factor used to transform the original figure into the other four figures.

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