Do samples provide better results than surveys? Give reasons for your answer.
Uploaded bysandeep View Answer
Explain the procedure of selecting a random sample of 3 students out of 10 in your class, by using random number tables.
Does the lottery method always give you a random sample? Explain.
Discuss how you would use the lottery method to select 3 students out of 10 in your class?
Suppose there are 10 students in your class. You want to select three out of them. How many samples are possible?
:
Which of the following errors is more serious and why?
(a)
Sampling error
(b)
Non-Sampling error
Which of the following methods give better results and why?
Census
Sample
Give two examples each of sample, population and variable.
In a village of 200 farms, a study was conducted to find the cropping pattern. Out of the 50 farms surveyed, 50% grew only wheat. Identify the population and the sample here.
You want to research on the popularity of Vegetable Atta Noodles among children. Design a suitable questionnaire for collecting this information.
(a) Do you agree with the use of chemical fertilisers?
(b) Do you use fertilisers in your fields?
(c) What is the yield per hectare in your field?
Wouldn't you be opposed to increase in price of petrol?
If plastic bags are only 5 percent of our garbage, should it be banned?
How far do you live from the closest market?
Non-sampling errors can be minimised by taking large samples (true/ false).
There is a certain bias involved in the non-random selection of samples (true/false).
Data collected by investigator is called the secondary data (true/false).
Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area (true/false).
There are many sources of data (true/false).
Frame five two-way questions (with 'Yes' or 'No').
What is the monthly income of your family?
Rise in the price of petrol is justified.
Which of the following newspaper/s do you read regularly?
How often do you use computers?
Which of the following is the most important when you buy a new dress?
sandeep View Answer