Weight of 15 persons is as follows:
`{:("Weight(kg)",20,28,34,39,42,50,53,54,59,64,72,74,74,78,79):}`
Find out mean weight, using Direct Method as well as Short-cut Method.

The weights (in kilogram) of 15 students are as follows : 31, 35, 27, 29, 32, 43, 37, 41, 34, 28, 36, 44, 45, 42, 30 Find the median. If the weight 44 kg is replaced by 46 kg and 27 kg by 25 kg, find the new median.

Following are the wages of 19 workers: {:("Wages(Rs.)",10,20,30,40,50),("Number of Workers",4,5,3,2,5):} Calculate arithmetic mean, using Short-cut Method.

The weights (in kg) of 10 boys from a team are recorded as follows : 55, 53, 48, 47, 54, 49, 64, 45, 55, 50. Find their mean weight.

The following table shows the weights of 12 persons. Weight (in kg): 48 50 52 54 58 Number of persons: 4 3 2 2 1 Find the median and mean weights. Using empirical relation, calculate its mode.

Average age of the people of a counry is shown in the following table: {:("Age (Years)",10-20,20-30,30-40,40-50,50-60),("People ('000)"," "30," "32," "15," "12," "9):} Find out mean age by Direct Method.

The following are weights (in kg) of 12 people. 70, 62, 54, 57, 62, 84, 75, 59, 62, 65, 78, 60 (a) Find the mean of the weights of the people. (b) How many people weight above the mean weight? (c) Find the range of the given data.

The weight of 12 students (in kg) are : 40,61,54,50,59,37,51,41,48,62,46 and 34. Find the median weight. If the weight of 62 kg is replaced by 35 kg, find the new median weight.

The weights (in kg) of 15 students are: 31,35,27,29,32,43,37,41,34,28,36,44,45,42,30 Find the median.If the weight 44kg is replaced by 46kg and 27kg by 25kg, find the new median.