Ex – 13.3 Que No. 6 Q.6) 100 surnames were randomly picked up from a local telephone directory and the frequency distribution of the number of letters in the English alphabets in the surnames was obtained as follows: Determine the median number of letters in the surnames. Find the mean number of letters in the […]
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Ex – 13.3 Que No. 5 Q.5) The following table gives the distribution of the life time of 400 neon lamps : Find the median life time of a lamp. Solution:-
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Ex – 13.3 Que No. 4 Q.4) The lengths of 40 leaves of a plant are measured correct to the nearest millimetre, and the data obtained is represented in the following table : Find the median length of the leaves.(Hint : The data needs to be converted to continuous classes for finding the median, since
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Ex – 13.3 Que No. 3 Q.3) A life insurance agent found the following data for distribution of ages of 100 policy holders. Calculate the median age, if policies are given only to persons having age 18 years onwards but less than 60 year. Solution:-
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Ex – 13.3 Que No. 2 Q.2) If the median of the distribution given below is 28.5, find the values of x and y. Solution:-
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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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