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प्रश्न
If `sumf_ix_i=75 and sumfi=15` , then find the mean x .
उत्तर
Mean = `barx=(sumf_ix_i)/(sumf_i)`
`barx=(sumf_ix_i)/(sumf_i)=75/15=5`
Mean= `bar x=5`
संबंधित प्रश्न
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| Less than 145 | 11 |
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| Less than 155 | 40 |
| Less than 160 | 46 |
| Less than 165 | 51 |
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