Course Outline
Math Progress
0%
📊 Problem Solving~15% of SAT Math
Statistical Measures
Calculate and interpret mean, median, mode, and range.
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Worked Example
Practice Problems
Problem
Data: 3, 7, 5, 9, 6
Problem
Data: 2, 3, 4, 5, 100
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SAT Strategies
Pro Tips & Shortcuts
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SAT Tip: To find a missing value when mean is given, use: Sum = Mean × Count.
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SAT Tip: Median is better than mean when data has outliers or is skewed.
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SAT Tip: If all values appear once, there is no mode.
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SAT Tip: Always arrange data in order before finding median.
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SAT Tip: When data has outliers, median is often more representative than mean.
⚡ Shortcut
If mean of 5 numbers is 20, their sum is 5 × 20 = 100.
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For n values, median position is (n+1)/2 when n is odd.
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Range gives a quick sense of data spread but is affected by outliers.
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In this case, mean equals median because data is symmetric.
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Outliers pull the mean toward them but don't affect median much.