Measures of Central Tendency for Grouped Data
Mathematics SSS 2 Third Term
WEEK 8
Measures of Central Tendency for Grouped Data
Performance Objectives
Students should be able to;
- Determine the Mean of grouped data
- Determine the Median of grouped data
- Determine the Mode of grouped data
Mean of Grouped Data
Content
Mean for grouped data can be calculated in two ways;
(i) Mean for problems without assumed mean
x = fxf
Where x is the class mark or class midpoint
(ii) Mean of problems with assumed mean
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