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If the algebraic sum of deviations of 20...

If the algebraic sum of deviations of 20 observation measured from 23 is 70 mean of these obervations would be

A

24

B

25

C

26.5

D

23

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The correct Answer is:
D
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ARIHANT SSC-AVERAGE -EXERCISE BASE LEVEL QUESTION
  1. The average of 8 numbers is 14. The average of 6 of these numbers is 1...

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  2. Average age of 5 boy is 16 yr, of which that of 4 boys is 16 yr 3 mont...

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  3. If the algebraic sum of deviations of 20 observation measured from 23 ...

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  4. Eight consecutive numbers are given. If the average of the two numbers...

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  5. The average of 4 consecutive even numbers is 27. What is the greatest ...

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  6. A businessman purchased 30TV sets in Rs300000. If the average cost of ...

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  7. The average age of 30 girls is 13 yr. The average of first 18 girls is...

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  8. The average of four consecutive numbers. A,B,C and D is 49.5 . What is...

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  9. The average heigh tof the basket ball team A is 5ft 11inches and that ...

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  10. The average of 13 results is 60 . If the average of first 7 Results is...

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  11. The average of 50 numbers is 38. If the two numbers 45 and 55 are not ...

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  12. Average weight of 19 men is 74kg and the average weight of 38 women is...

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  13. The average marks of 30 students are 45 but after checking , there are...

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  14. The average of nine numbers is 50. The average of the first five numbe...

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  15. The mean marks obtained by seven in a group is 226 . If the marks obta...

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  16. A cricketer has a mean score of 60 runs in 10 innings. Find out how ma...

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  17. The mean weight of 34 students of a school is 42kg . If the weight of ...

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  18. The average weight of 21 boys was recorded as 64 kg. If the weight of ...

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  19. The average age of 14 girls and their teacher's age is 15yr . If teach...

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  20. The average of six observations is 12. the average decreases by 1 when...

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