Quiz 1 BER Training (Sampling)

Sampling is needed because

• most of the time it is not feasible to collection information from multiple samples
• most of the time it is not feasible to collect information from the whole population
• most of the time population is not available
• All of the above
• None of the above

Suppose a survey firm is assigned the work of estimating average household income level of Dhaka city. Their office is located in Gulshan-2. They collected sample households from that area because it is more convenient. It is highly likely that the estimated average will

• underestimate the household average income in the population
• be equal to the household average income in the population
• overestimate the household average income in the population
• None of the above

Which of the following statements is true?

• An element is the entity on which data are collected
• Population is collection of all the elements of interest
• A sample is a subset of the population
• All of the above
• None of the above

Which of the following statement is true?

• Target population is the population about which we want to make inferences
• Target population is the the population from which the sample is actually selected
• Sampled population is the population about which we want to make inferences
• Sampled population is the the population from which the sample is actually selected

Which of the following is an example of sampling error?

• In a sample of married males, unmarried male is also included
• Getting no response from some of the sample on socially sensitive issue
• The difference between sample average and population average
• All of the above
• None of the above

Which of the following is an example of non-sampling error?

• In a sample of married males, unmarried male is also included
• Getting no response from some of the sample on socially sensitive issue
• The difference between sample average and population average
• All of the above
• None of the above