Problem Solving & Data AnalysisMedium
One-variable data: Distributions and measures of center and spread
Calculate and interpret mean, median, mode, range, and standard deviation from data sets and graphs.
Sample SAT Problem
The ages of 5 students are: 14, 15, 15, 17, 19. What is the median?
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Step-by-Step Solution
Arrange in order (already done). The middle value is 15.
Key Tips from Pamela
- Median is the middle value — always sort the data first.
- Mean is sensitive to outliers; median is not.
- Standard deviation measures how spread out the data is around the mean.
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