Find out arithmetic mean from the following distribution by Short-cut Method: `{:("Items",10-8,8-6,6-4,4-2,2-0),("Frequency"," "10," "8," "6," "4," "2):}`

Calculate the arithmetic mean of the following frequency distribution by Direct Method: {:("Class Interval",10-20,20-40,40-70,70-120,120-200),("Frequency"," "4," "10," "26," "8," "2):}

The mode for the following frequency distribution is {:("C.I." ,0-4,4-8,8-12,12-16),("Frequency "," "4," "8," "5," "6):}

The mode for the following frequency distribution is {:("C.I." ,0-4,4-8,8-12,12-16),("Frequency "," "4," "8," "5," "6):}

Find the mean of the following distribution: 4 6 9 10 15 5 10 10 7 8

Find the mean of the following distribution: 4 6 9 10 15 5 10 10 7 8

Find the mean of the following distribution: x: 4 6 9 10 15 f: 5 10 10 7 8

Find the mean of the following distribution: x: 4 6 9 10 15 f: 5 10 10 7 8

Find the mean of the following distribution: x: 4 6 9 10 15 f: 5 10 10 7 8