Question

37. Identify what, if any, bias is found in each of the following sampling scenarios. Explain your answer for each one. (6 marks total) a) Selecting some residents of a building to participate in a survey of recycling options based on the last digit of their phone number (2 marks) b) Deciding whether to create a new restaurant menu based on the responses of customers who returned a survey card (2 marks) c) Polling members of a business association to gauge public reaction to a proposed new business tax (2 marks)

Answer 1

a) Selecting some residents of a building to participate in a survey of recycling options based on the last digit of their phone number-This is an example of sampling bias as the last digit of the phone number may not be a good sampling criterion as there may only be five residents who have that digit, and there may be 200 different residents.

b) Deciding whether to create a new restaurant menu based on the responses of customers who returned a survey card-This is an example non-response bias, as the statement implies that there were people that did not return a survey card, as is usually the case with surveys that are taken home.

c) Polling members of a business association to gauge public reaction to a proposed new business tax-This is household bias as only polling members of a business association will exclude those who are not members of the association or do not own a business.

****Please please please LIKE THIS ANSWER, so that I can get a small benefit, Please****