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[" Calculate Mean,Variance and Standard Deviation for the following "],[" distribution."],[hline" Classes ",30-40,40-50,50-60,60-70,70-80,80-90,90-100],[hline" Frequency ",3,7,12,15,8,3,2],[hline]

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Calculate the mean, variance and standard deviation for the following distribution: Class 30-40 40-50 50-60 60-70 70-80 80-90 90-100 Frequency 3 7 12 15 8 3 2

Calculate the mean, variance and standard deviation for the following distribution:Class 30-40 40-50 50-60 60-70 70-80 80-90 90-100Frequency 3 7 12 15 8 3 2

Calculate the mean and standard deviation for the following distribution: Marks:,20-30,30 - 40,40-50,50-60,60-70,70-80,80-90 No.of students: 3,6,13,15,14,5,4

Calculate the mean and standard deviation for the following distribution: Marks:, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80, 80-90 No. of students:, 3, 6, 13, 15, 14, 5, 4

Calculate mean, variance and standard deviation of the following frequency distribution: Class 1-10 10-20 20-30 30-40 40-50 0-60 Frequency: 11 29 18 4 5 3

Calculate mean, variance and standard deviation of the following frequency distribution: Class 1-10 10-20 20-30 30-40 40-50 0-60 Frequency: 11 29 18 4 5 3

Using step deviation method find the standard deviation and its coeficient of the following data.Class 20-30,40-50,50-60,60-70,70-80,80-90 and Frequency 3,61,132,153,140,51,2

Find the cumulative frequency of the class 40-50 in the following distribution. {:("Class ",40-50,50-60,60-70,70-80,80-90,90-100),("Frequency "," "10," "25," "28," "12," "10," "15):}

Calculate mode from the following data : {:("Class Interval",30-40,40-50,50-60,60-70,70-80,80-90,90-100),("Frequency"," "3," "4," "6," "10," "6," "4," "3):}

Find the mean of the following frequency distribution. {:("Classes :",0-20,20-40,40-60,60-80,80-100,),("Frequency :"," 15"," 18"," 21"," 29 "," 17",):}