The distribution below shows the number of wickets taken by bowlers in one-day cricket matches . Find the mean number of wickets by choosing a suitable method. What does the mean signify ?
`{:("Number of wickets ","Number of bowlers "),(25-60,7),(60-100,5),(100-150,16),(150-250,12),(250-350,2),(350-450,3):}`

The table below gives the percentage distribution of female in the primary schools of rural areas of various states and union territories (U.T) of India . Find the mean percentage of female teachers using all the three methods. {:("Percentage of female teachers","Number of States/U.T"),(15-25,6),(25-35,11),(35-45,7),(45-55,4),(55-65,4),(65-75,2),(75-85,1):} .

A student noted the number of cars passing through a spot on a road for 100 periods , each of 3 minutes , an summarised this in the table given below . {:("Number of cars","Frequency"),(0-10,7),(10-20,14),(20-30,13),(30-40,12),(40-50,20),(50-60,11),(60-70,15),(70-80,8):} Find the mode of the data .

A cricket term of 11 players is to formed from 16 players including 5 bowlers and 2 wicket keepers . The number of ways that a term can be formed so that the tram contains at least 4 bowlers and one wicket keeper is

Find the number of ways of selecting 11 member cricket team from 7 bats men, 6 bowlers and 2 wicket keepers so that the team contains 2 wicket keepers and atleast 4 bowlers.

The table below shows the daily expenditure on food of 25 households in a locality . {:("Daily expenditure (Rs)" ,"Number of households"),(100-150,4),(150-200,5),(200-250,12),(250-300,2),(300-350,2):} Find the mean of expenditure on food of households in a locality .

Six faces of a balanced die are numbered from integers 1 to 6. This die is tossed 60 times and the frequency distriction of the integers obtained is given below. Then the mean of the grouped data is {:("Integer",1,2,3,4,5,6),("Frequency",8,9,10,16,9,8):}

Consider the following distribution of daily wages of 50 workers of a factory . {:("Daily wages in Rupees","Number of workers"),(200-250,12),(250-300,14),(300-350,8),(350-400,6),(400-500,10):} Find the mean daily wages of the workes of the factory by using an appropriate method .

Find the mean deviation from the mean for the following continuous frequency distribution. {:("Sales in Rs. thousand",40-50,50-60,60-70,70-80,80-90,90-100),("Number of Companies",5,15,25,30,20,5):}