[" If for some "x in R," the frequency distribution of the marks obtained by "20" students in a test is: "],[" Marks "],[" Frequency "(x+1)^(2)],[" then the mean of the marks is: "]

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:

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:

If for some x in R the frequency distribution of the marks obtained by 20 statement in a test is : {:("Marks",2,3,5,7),("Frequency",(x + 1^(2)),(2x - 5),(x^(2) - 3x),x):} then the mean of the marks is :

The frequency distribution of marks obtained by students in a class test is given below . Draw frequency polygon and ogive.

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.

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.

Find the mode of the following frequency distribution of obtained marks of 22 students.