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If 1-10, 11-20, 21-30, 31-40, ......., a...

If 1-10, 11-20, 21-30, 31-40, ......., are the classes of a frequency distribution, then the upper boundary of the class 31-40 is _____.

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40.5
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PEARSON IIT JEE FOUNDATION-STATISTICS-VERY SHORT ANSWER TYPE QUESTIONS
  1. If 1-10, 11-20, 21-30, 31-40, ......., are the classes of a frequency ...

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  2. If 1-5, 6-10, 11-15, ........, are classes of a frequency distribution...

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  3. In a class, seven students got 90 marks each, the frequency of the obs...

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  4. If the lower boundary of a class is 35 and length of the class is 5, t...

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  5. Range of the scores 27, 35, 47, 36, 25 and x is 23, wher x lt 25, then...

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  6. In a histogram, width of the rectangle represents of the class and le...

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  7. If the median of the scores 1, 2, x, 4 and 5 (where 1 lt 2 lt x lt 4 l...

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  8. In a less than cumulative frequency distribution, frequency and cumula...

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  9. Mode of the scores 2, 3, 2, 4, 3, 2, 4, 6 is .

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  10. If the median of scores x/2, x/3, x/4, x/5a n dx/6(w h e r e\ x >0)...

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  11. The coefficient of range of the scores 1, 2, 3, 4 and 5 is .

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  12. If sum of the 20 deviations from the mean is 100, then the mean deviat...

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  13. If lower and upper quartiles of the data are x and y respectively, the...

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  14. If mode and median of the certain scores are 2 and 2, then mean is .

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  15. If the mean of the scores x(1), x(2), x(3), x(4), x(5) "and" x(6) is x...

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  16. If the mean of a, b and c is b, then a + c in terms of b is .

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  17. If lower and upper quartiles of the data are 23 and 25 respectively, t...

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  18. Mode of certain scores is x. If each score is decreased by 3, then the...

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  19. If the mean of 2, 4, 6, 8, x and y is 5, then x + y is .

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  20. Find the mean of the following: 10(1)/(4), 9, 4 (3)/(4), 8, 2 (2)/(3...

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