Measures of Central Tendency and Measures of Dispersion.

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Presentation transcript:

Measures of Central Tendency and Measures of Dispersion

Formulas mean of ungrouped data (here x is the data point) mean of grouped data (here x is the midpoint of a group)

Formulas standard deviation

Miles run per week Number of weeks Tom Ball, an avid jogger, kept detailed records of the number of miles he ran per week during the past six months. The frequency distribution summarizes his records. Find the mean, median, and mode of the number of miles per week that Tom ran. Draw a box and whiskers plot of the data.

The weight (in pounds) of the ten Truly Amazing Dudes are as follows: Find the mean and standard deviation of the weights