The Canadian government conducts a country-wide survey every 5 years to collect information from residents.
a) Canadians who may not be included in the survey are individuals who do not have a fixed address, such as homeless people, as they may not receive the survey through mail.
b) Residents who may not be included in the survey are those who have recently moved and have not updated their address with the government, leading to the survey being sent to the wrong location.
c) If 3% of the population is typically missed in the survey, the results may not be a fully valid representation of the entire population. This is because the missing 3% could introduce bias into the data, leading to an inaccurate portrayal of the overall population. To improve the validity of the results, efforts could be made to reduce the percentage of missed individuals in the survey to ensure a more accurate representation of the population.