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Measures of Central Tendency — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsMeasures of Central Tendency3 Marks
Question
Calculate arithmetic mean using direct method.
Wages (in ₹)
10
20
30
40
50
Number of workers
4
5
3
2
1
✓

Answer

Wages (in ₹) (X)
No. of workers (f)
fX
10
4
40
20
5
100
30
3
90
40
2
80
50
1
50
 
$\Sigma\text{f}=15$
$\Sigma\text{fX}=360$
$\overline{\text{X}}=\frac{\Sigma\text{fX}}{\Sigma\text{f}}=\frac{360}{15}=24$

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