Ex – 13.3 Que No. 1 Q.1) The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median, mean and mode of the data and compare them. Solution:-
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Ex – 13.2 Que No. 6 Q.6) A student noted the number of cars passing through a spot on a road for 100 periods each of 3 minutes and summarised it in the table given below. Find the mode of the data : Solution:-
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Ex – 13.2 Que No. 5 Q.5) The given distribution shows the number of runs scored by some top batsmen of the world in one-day international cricket matches. Runs scored N. Find the mode of the data. Solution:-
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Ex – 13.2 Que No. 4 Q.4) The following distribution gives the state-wise teacher-student ratio in higher secondary schools of India. Find the mode and mean of this data. Interpret the two measures. Solution:-
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Ex – 13.2 Que No. 3 Q.3) The following data gives the distribution of total monthly household expenditure of 200 families of a village. Find the modal monthly expenditure of the families. Also, find the mean monthly expenditure : Solution:-
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Ex – 13.2 Que No. 2 Q.2) The following data gives the information on the observed lifetimes (in hours) of 225 electrical components : Determine the modal lifetimes of the components. Solution:-
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Ex – 13.2 Que No. 1 Q.1) The following table shows the ages of the patients admitted in a hospital during a year: Find the mode and the mean of the data given above. Compare and interpret the two measures of central tendency. Solution:-
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Ex – 13.1 Que No. 9 Q.9) The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate. Solution:-
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Ex – 13.1 Que No. 8 Q.8) A class teacher has the following absentee record of 40 students of a class for the whole term. Find the mean number of days a student was absent. Solution:-
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Ex – 13.1 Que No. 7 Q.7) To find out the concentration of SO2 in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: Find the mean concentration of SO2 in the air Solution:-
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