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Judy Allard

Is there a difference in mass between M&M peanuts of different colors? In this exercise, you are going to use statistical methods to answer this extremely important question!

Each student will measure the mass of 10 M & M Peanuts (which have been dipped in milk chocolate and covered with a thin candy shell) to the nearest tenth of a gram. Do not use any defective peanuts. Express the results in chart form. Calculate the mean, median, mode, variance, standard deviation (1s and 2s) and standard error for your sample.

Get the mean and variance from the samples of three other students in the class. These students must have used different colors of M & M Peanuts than the ones in your sample. Apply the t-test to compare each of the samples to your own. Be sure to include all the elements of the t-test, including the null hypothesis and the conclusion.

Write your sample mean on the table on the chalkboard. Express the means of the class in a frequency distribution table and a frequency distribution graph.

Write up the lab in proper lab report form.

HINT: Your experimental hypothesis should be written in terms of the difference in mass of M & M Peanuts of different colors. The statistical analysis of your data should be part of your "Results" section. Your experimental conclusion should be written after the discussion portion of your lab report in which you discuss your results and the class results and speculate as to explanations. You can also discuss further areas of research in the discussion section..

Biological Science: Interaction of Experiments and Ideas (BSCS Second Level), 3rd edition, Chapter 5

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