Some questions are asked by class 11 students related to Statistics for Economics

Question 1.
Frame at least four appropriate multiple choice options for following questions
(i) Which of the following is the most important when you buy a new dress?
(ii) How often do you use computers?
(iii) Which of the newspapers do you read regularly?
(iv) Rise in the price of petrol is justified.
(v) What is the monthly income of your family?
Answer:
(i) Which of the following is the most important when you buy a new dress?

• Price of the dress
• Fabric of the dress
• Colour of the dress
• Brand of the dress

(ii) How often do you use computers?

• At least once a day
• At least once a week
• At least once in fortnight
• Occasionally

(iii) Which of the newspapers do you read regularly?

• Times of India
• Hindustan Times
• Indian Express
• The Hindu

(iv) Rise in the price of petrol is justified.

• Strongly agree
• Strongly disagree
• Neither agree nor disagree
• Somewhat agree

(v) What is the monthly income of your family?

• Less than ? 10,000
• More than ? 10,000 but less than ? 25,000
• More than ? 25,000 but less than ? 50,000
• More than ? 50,000

Question 2.
Frame five two-way questions (with Tes’ or ‘No’).
Answer:

• Are you an Indian? (Yes/No)
• Do you live in Delhi? (Yes/No)
• Are you graduate? (Yes/No)
• Do you know swimming? (Yes/No)
• Have you ever been convicted by a court of law? (Yes/No)

Question 3.
State whether the following statement are true or false.
(i) There are many sources of data. (True/False)
Answer:
False
There are mainly two sources of data : Primary and Secondary.

(ii) Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area. (True/False)
Answer:
False
Mailing questionnaires would be more suitable as the population is literate. Telephonic survey is most suitable in case of illiterate population spread over a large area.

(iii) Data collected by investigator is called the secondary data. (True/False)
Answer:
False
Investigator may collect the data by conducting an enquiry or an investigation. Such data are called primary data, as they are based on first hand information.

(iv) There is a certain bias involved in the non-random selection of samples. (True/False)
Answer:
True
In a non-random sampling method all the units of the population do not have an equal chance of being selected and convenience or judgement of the investigator may create a bias.

(v) Non-sampling errors can be minimised by taking large samples. (True/False)
Answer:
False
It is difficult to minimise non-sampling error even by taking a large sample as they include Errors in Data Acquisition, Non-Response Errors and Sampling bias.

Question 4.
What do you think about the following questions. Do you find any problem with these questions? If yes, how?
(i) How far do you live from the closest market?
Answer:
This question is ambiguous people will not be able to answer this question as the different measures of distance like meters, kilometers, yards etc will complicate the analysis. It should be made specific as Flow many kilometers away is your home from the closest market?

• Less than 5 km
• Between 5-10 km
• More than 10 km

(ii) If plastic bags are only 5 per cent of our garbage, should it be banned?
Answer:
This question is a leading question, which gives a clue about how the respondent should answer by trying to point that 5% is a small percentage which can be tolerated. Better question would be Do you think plastic bags should be banned? (Yes)

(iii) Wouldn’t you be opposed to increase in price of petrol?
Answer:
This question comprises of two negatives which creates confusion to the respondents and may lead to biased response. Better question would be Would you opposed the increase in price of petrol?

(iv)
(a) Do you agree with the use of chemical fertilizers?
(b) Do you use fertilizers in your fields?
(c) What is the yield per hectare in your field?
Answer:
The order or sequence of questions is incorrect. The series of questions should move from general to specific. The correct order would be
(a) What is the yield per hectare in your field?
(b) Do you use fertilizers in your fields?
(c) Do you agree with the use of chemical fertilizers?

Question 5.
You want to research on the popularity of vegetable atta noodles among children. Design a suitable questionnaire for collecting this information.
Answer:
Questionnaire
Name ………………………………
Age …………………………………
Address ……………………………