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Q.

How do I decide when to use mean median or mode?

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Detailed Solution

Think of these three as different ways to describe the “typical” value. Choose the one that matches your data and your goal.

  • Mean is the arithmetic average. Add all values and divide by how many there are.
  • Median is the middle value when the numbers are in order.
  • Mode is the value that occurs most often. There can be more than one mode.

When each one is best

MeasureUse it whenWhy it helps
MeanNumbers are fairly balanced with no extreme valuesUses all data and is good for comparing groups
MedianData has extreme values or is skewed, or you care about the middle personNot pulled up or down by very large or very small numbers
ModeYou need the most common category or score, or your data is not numericalWorks for words or labels like favorite color, brand, or bus route
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