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Find the mean marks of the students from...

Find the mean marks of the students from the following cumulative frequency distribution: Marks: Below Below Below Below Below Below Below Below Below Below 10 20 30 40 50 60 70 80 90 100 No. of Students 5 9 17 29 45 60 70 78 83 85

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RD SHARMA ENGLISH-STATISTICS-All Questions
  1. If the mean of the following distribution is 54, find the value of p :...

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  2. If 2costheta-sintheta=x and costheta-3sintheta=ydot Prove that 2x^2+y^...

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  3. Find the mean marks of the students from the following cumulative freq...

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  4. Find the mean marks of students from the following cumulative frequenc...

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  5. The number of students absent in a school was recorded every day for ...

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  6. Classes:       25-29    30-34    35-39      40-44    45-49    50-54   ...

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  7. Compute the median from the following data: Mid-value:          115   ...

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  8. Find the median of the following frequency distribution: Weekly wages ...

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  9. If the median of the following frequency distribution is 46, find the ...

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  10. Calculate the median from the following data:Marks:                0-1...

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  11. Find the mode of the following data: 25,16,19,48,19,20,34,15,19,20,21,...

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  12. Compute the median for the following cumulative frequency distribution...

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  13. In Figure, A B C is right angled at B ,B C=7c m and A C-A B=1c m . Fi...

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  14. In Figure, Pa n dQ are the midpoints of the sides C Aa n dC B respecti...

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  15. The diagonals of a trapezium ABCD with AB||DC intersect each other at ...

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  16. The mean of the following frequency distribution is 50. Find the value...

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  17. If s e c4A=cos e c(A-20^@) , where 4A is an acute angle, find the ...

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  18. In Figure P Q || C D and P R || C B. Prove ( A Q)/(Q D)=(A R)/(R B)d...

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  19. In Figure, two triangles A B C and D B C are on the same base B C in w...

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  20. Find the mode of the following data: Class        Frequency       0-2...

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