write the class mark of 20 - 25
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5 there are five class mark
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Class marks are: 15,20,25,...
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20=
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 2
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20 =17.5
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20 =17.5Upper limit of class 20 is the mean of 20 and 25=
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20 =17.5Upper limit of class 20 is the mean of 20 and 25= 2
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20 =17.5Upper limit of class 20 is the mean of 20 and 25= 220+25
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20 =17.5Upper limit of class 20 is the mean of 20 and 25= 220+25
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20 =17.5Upper limit of class 20 is the mean of 20 and 25= 220+25 =22.5
Class marks are: 15,20,25,...Lower limit of class 20 is mean of 15 and 20= 215+20 =17.5Upper limit of class 20 is the mean of 20 and 25= 220+25 =22.520 is the class mark for the class interval 17.5−22.5
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