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There are 60 students in a class. The fo...

There are 60 students in a class. The following is the frequency distribution of marks obtained by the students in a test: Marks: 0 1 2 3 4 5 Frequency `x-2` , `x` , `x^2` , `(x+1)^2` , `2x` , `x+1` `Determine the mean and standard deviation.

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There are 60 students in a class. The following is the frequency distribution of marks obtained by the students in a test: Marks:, 0, 1, 2, 3, 4, 5 Frequency , x-2 , x , x^2 , (x+1)^2 , 2x , x+1 . Determine mean and standard deviation of the marks.

There are 60 students in a class. The followng is the frequency distribution of marks obtained by the students in a test. where x is positive integer. Determine the mean of the marks.

If for some x in R , the frequency distribution of the marks obtained by 20 students in a test is: Then the mean of the marks is:

Find the mode of the following frequency distribution of marks obtained by 50 students. Marks obtained 0−10 10−20 20−30 30−40 40−50 No. of students 5 12 20 10 3

Find the median for the following frequency distribution : {:("Marks obtained"(x_(i)),29,32,34,27,42,37),("Number of students"(f_(i)),2,5,10,12,8,4):}

The mean deviation about the median of the following distribution is {:("Marks obtained",10,11,12,14,15),("Number of students",2,3,8,3,4):}

Following is the distribution fo marks obtained by 50 students in a test. {:("Marks more than",0,10,20,30,40,50),("No. of Students",50,46,40,20,10,3):} If 60% of the students pass the test, find the minimum marks obtained by a pass students.

The frequency distribution of marks obtained by 28 students in a test carrying 40 marks is given below: {:("Marks":,0-10,10-20,20-30,30-40),("Number of students":,6,x,y,6):} If the mean of the above data is 20, then the difference between x and y is

The frequency distribution for x is an given below. What is the range of f? {:(x,f),(0,1),(1,5),(2,4),(3,4):}

Find The standard deviation of the following frequency distribution is {:(X,2,3,4,5,6,7),(f,4,9,16,14,11,6):}

RD SHARMA ENGLISH-STATISTICS-All Questions
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  10. Calculate the mean and standard deviation for the following distrib...

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  16. If the standard deviation of a variable X \ is \ sigma , then standard...

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  17. Following are the marks obtained, out of 100, by two students Ravi and...

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  18. Let a, b, c, d, e, be the observations with m and standard deviation s...

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  20. If the S.D. of a set of observations is 8 and if each observation is ...

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