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Class mark of 60-90 is 75. Is it true?...

Class mark of 60-90 is 75. Is it true?

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True/false Class Mark of 90-120 is 100.

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The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: Range of the marks obtained.

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MODERN PUBLICATION-STATISTICS-EXERCISE
  1. 100 surnames were randomly picked up from a local telephone directory ...

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  2. Mean, median and mode are measured in same units. Is it true?

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  3. Class mark of 60-90 is 75. Is it true?

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  4. If the mean of 2,4,6,8,a,b is 5, find a+b.

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  5. If the median of x/2,x/3,x/4,x/5 and x/6(x>0) is 6. then find x/6.

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  6. If the median of 33,28,20,25,34,x is 29. find the maximum value of x.

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  7. If the mode of 13,14,15,14,16,15,x is 14, find the value of x.

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  8. If barx represents the mean of n observations x1, x2,…….,xn , then val...

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  9. The mid value of a class interval is 42 and the class size is 10. find...

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  10. Let barx be the mean of x1,x2,……,xn and bary the mean of y1,y2……,yn ba...

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  11. If each observation of a data is increased by 3, then what about the n...

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  12. True/false Mean, Median and Mode are measures in same units.

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  13. True/false Class Mark of 90-120 is 100.

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  14. True/false Mode of 2,3,9,16,3,9, is 16.

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  15. True/false For the set of numbers 2,2,4,5 and 12, then Mean>mode

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  16. True/false Is arithmetic mean of 7,5,13,x and 9 is 10, then x is 5.

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  17. True/false Empirical relatin between mean, mode and median is Mode=2Me...

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  18. True/false Median 0,2,2,2,-3.5,-1.5,-3,6,6,5,6 is 3.5.

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  19. True/false If the mean of 5 observation x,x+2,x+4,x+6,x+8 is 11, then ...

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  20. Let m be the mid-point and l be the upper class limit of a class in a ...

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