Activity Description Enter data and view the mean, median, variance, and standard deviation of the data set. Parameters: Number of observations, range for observations, which statistics to view, identifiers for the data.

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Measures

Place in mathematics curriculum:

• introduce and/or develop fractions
• develop the idea of averages, both through numerical and geometrical methods
• develop estimating skills
• introduce and/or reinforce the ideas of mean, median, and mode
• introduce and/or reinforce the ideas of variance and standard deviation
• develop recognition and understanding of data representations

This applet allows the user to select the number and height of plants or to name a different item data have been collected about to experiment with to find the total height, mean, median, mode, range, variance, and deviation. This activity would work well in groups of 2 for about 20-25 minutes if you use the exploration questions and 15-20 minutes otherwise.

Preparations for this activity: