TR Jain & VK Ohri (2019) - GeniusJnr

How would you distinguish between economic activity and non-economic activity? Draw a list of economic and non-economic activities of your family members. Give logical reasoning in support of your answer.

You are to conduct direct personal investigation on the quality of teaching in a school. Who are your informants? What difficulties do you expect to encounter in such an exercise?

Which method − census or sample − would you prefer if you are to study economic conditions of the people in your area?

Identify 10 important objects that impact your environment. Classify them, as living and non-living. Is it a quantitative classification? If not, give reasons.

Using some hypothetical data, and descriptive form of data presentation:
Describe the impact of strike by the traders in your city.

Get information from your school office about the CBSE result (2018) for the students of Class XII in your school. Draw a bar diagram (showing their aggregate marks classified as 1st division, 2nd division and 3rd division).

Visit different schools in your locality. Collect information on the daily wage earners. Your information should include (i) daily earnings, and (ii) number of wage earners. Convert the raw data in to a continuous frequency distribution, and present your information in the form a histogram.

Get data from your school office on the total fee charged for admission to Class XI, between the period 2011-2018. Plot the data on graph paper. Read the arithmetic line graph carefully and write your observation.

Following is the monthly income of eight families in a locality
Monthly Income (₹) : 70, 10, 500, 75, 13, 250, 8, 42
Find out arithmetic mean using Direct Method and Short-cut Method.

Marks of 15 students in their Economics paper are:
6, 9, 10, 12, 18, 19, 23, 23, 24, 28, 37, 48, 49, 53, 60
Find the median marks.

5 students obtained following marks in statistics:
20, 35, 25, 30, 15
Find out range and coefficient of range.
 

Explain the relation betwen price and quantity supplied through a scattered diagram.