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प्रश्न
If the average selling price of 15 books is ₹ 235, then the total selling price is __________
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उत्तर
If the average selling price of 15 books is ₹ 235, then the total selling price is 3,525
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संबंधित प्रश्न
The calculated mean of 50 observations was 80. It was later discovered that observation 19 was recorded by mistake as 91. What was the correct mean?
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The following table shows the electricity (in units) used by 25 families of Eklara village in a month of May. Complete the table and answer the following questions.
| Electricity used (units) `bb(x_i)` |
No. of Families (frequency) `bb(f_i)` |
`bb(f_ix_i)` |
| 30 | 7 | _________ |
| 45 | 2 | __________ |
| 60 | 8 | __________ |
| 75 | 5 | __________ |
| 90 | 3 | __________ |
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- State the score, the frequency of which is 5.
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- Find the mean of electricity used by each family in the month of May.
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