Describing data numerically
Activities: In-class, small group
- The
Effect of an Outlier on the Mean and Median. This activity
involves having students analyze how many significant others they have
had. One data point is multiplied by 10 to determine how the sample
mean and sample median are affected by an outlier. Submitted
by Laura J. Simon.
Cartoons
Class lecture notes
- Measures
of location. How to describe
data with numbers by using measures of location. Submitted
by Laura J. Simon.
- Measures
of variability. How to describe data
with numbers by using measures of variability such as range, interquartile
range, variance, standard deviation, and coefficient of variation. Submitted
by Laura J. Simon.
- Measures
of variation. How to use measures of variation such as range,
variance, standard deviation, interquartile range, and boxplot. Submitted
by Herb McGrath.
Videos
- Against All Odds: Inside Statistics Video 3: Describing Distributions:
Numerical Descriptions. A few good numbers can be worth a thousand
words. Examines the difference between mean and median and learn of
quartiles, boxplots, interquartile range, and standard deviation.
Also discussed is the advantage of back-to-back stemplots.
An example of pay inequity illustrates the principles. (28:49
mins.) Video available in Main Office and from Penn State AVS.
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