Mean, Median, and Mode
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Objective
I can calculate and interpret the mean, median, and mode of a data set and explain how outliers affect each measure.
Part 1 of 3
Key concepts
3 concepts
- 1
The mean is calculated by summing all values in a dataset and dividing by the number of values, while the median is the middle value when the data is ordered.
- 2
The median is more resistant to outliers than the mean, making it a better measure of central tendency for skewed data.
- 3
The mode is the value that appears most frequently in a dataset, and a dataset can have no mode, one mode (unimodal), or multiple modes.
Part 2 of 3
Practice
12 questions
Calculate the mean, median, and mode of the following dataset: [15, 20, 25, 20, 30]
Explain how adding the outlier '100' to the dataset [10, 12, 14, 16, 18] will affect the mean.
Part 3 of 3
Exit ticket
Quick comprehension check
“Consider the dataset: 12, 15, 18, 22, 25, 130. Calculate the mean, median, and mode. Then, explain which measure is most affected by the outlier and why.”
Sample answer included in the free materials
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