Measures of Central Tendency — Economics STD 11 Commerce — Question

Determine the value of mode graphically. Also verify the result:

Marks	0-10	10-20	20-30	30-40	40-50	50-60	60-70
No. of Students	4	8	14	20	20	15	6

The following table gives the average product schedule of labour. Find the total product and marginal product schedules. It is given that the total product is zero at zero level of labour employment.

L	1	2	3	4	5	6
AP<sub>L</sub>	2	3	4	4.25	4	3.5

“Algebraic signs are not taken into consideration in computing mean deviation.” Explain.

Given the following data.

School	Mean Income (in ₹)	Standard Deviation (in ₹)
A	800	120
B	900	135

Compare the variability in income of teachers in two schools.

There are 80 students in Silver Bells School who play cricket. A city level tournament has been organised and the school is required to send it's team to play in the tournament. The sports teacher, Mr Murthy, decided to select 14 players; 11 regulars and 3 substitutes. Should he select the team randomly? Why or why not?

A firm's SMC schedule is shown in the following table. The total fixed cost of the firm is] ₹100. Find the TVC, TC, AVC and SAC schedules of the firm.

Q	0	1	2	3	4	5	6
SMC	-	500	300	200	300	500	800

A scatter diagram is drawn by Avantika to assess the degree of correlation between price and quantity demanded. On plotting the points, she observes that all the points lie on the same downward sloping line and concludes that both the variables exhibit perfect positive correlation. Is she correct? Give reasons for your answer.

What methods are used for constructing Consumer Price Index number?

Name the different attributes according to which data in a table can be classified.