MICROECONOMICS CH : 9 CONCEPT OF REVENUE — Economics STD 11 Commerce — Question

The size of land holdings of 380 families in a village is given below. Find the median size of land holdings.

Size of Land Holdings (in acres)	Less than 100	100-200	200-300	300-400	400 and above
No. of Families	40	89	148	64	39

Differentiate between inclusive and exclusive series.

Calculate the co-efficient of correlation of the following data by the Spearman's rank co-relation method.

X	19	24	12	23	19	16
Y	9	22	20	14	22	18

Discuss meaning, merits and demerits of telephonic interview and questionnaires filed through enumerators.

Discuss merits and demerits of deliberate sampling.

Giving reason, comment on the shape of production possibilities curve based on the following schedule:

Good-X (Units)	0	1	2	3	4
Good-Y (Units)	20	18	14	8	0

Distinguish between inclusive series and exclusive series.

The marks obtained by 25 students in a class are as follows:
22, 28, 30, 32, 35, 37, 40, 41, 43, 44, 45, 45, 48, 49, 52, 53, 54, 56, 56, 58, 60, 62, 65, 68, 69

1. Arrange the above data in the form of a frequency distribution taking class interval.

20-29, 30-39, 40-49, 50-59, 60-69

2. Form the less than cumulative frequency distribution also.