## The distances covered by 250 public transport buses in a day is shown in the following frequency distribution table. Find the median of the distances.

Let us prepare cumulative frequency table: Here, N = 250N/2 = 250/2 = 125Since, cumulative frequency 180 is just greater than 125. ⇒ median class = 220-230Median is given by Where l = lower limit of the median classN = Sum of frequenciesh = class interval of the median classcf = Cumulative frequency of the class preceding […]

## The following frequency distribution table shows the amount of aid given to 50 flood affected families. Find the mean of the amount of aid.

Using given data, we can construct a table which is mentioned below. Mean is given by ⇒ Mean = 3620/50⇒ Mean = 72.4Now, since the amount of aid is given in thousand rupees.Then, Mean = 72.4 × 1000⇒ Mean = 72400Thus, mean amount of aid is Rs. 72,400.

## The weekly wages of 120 workers in a factory are shown in the following frequency distribution table. Find the mean of the weekly wages.

Using given data, we can construct a table which is mentioned below. Mean is given by ⇒ Mean = 510000/120⇒ Mean = 4250Thus, mean weekly wages is Rs. 4250.

## The loans sanctioned by a bank for construction of farm ponds are shown in the following table. Find the mean of the loans.

Using given data, we can construct a table which is mentioned below. Mean is given by ⇒ Mean = 6540/100⇒ Mean = 65.4Now, since the loan is given in thousand rupees.Then, Mean = 65.4 × 1000⇒ Mean = 65400Thus, mean loan is Rs. 65,400.

## The following table shows the income of farmers in a grape season. Find the mean of their income.

Mean is given by ⇒ Mean = 4410/84⇒ Mean = 52.5Now, since the income is given in thousand rupees.Then, Mean = 52.5 × 1000⇒ Mean = 52500Thus, mean income is Rs. 52,500.

## Find the correct answer from the alternatives given.

(1) The persons of O- blood group are 40%. The classification of persons based on blood groups is to be shown by a pie diagram. What should be the measures of angle for the persons of O- blood group?A. 114°B. 140°C. 104°D. 144° Solution:D. 144°Explanation: (2) Different expenditures incurred on the construction of a building […]