Question

1. what is the purpose of exit polls?

a) to predict future elections
b) to gather data on voter demographics
c) to report live election results
d) to conduct informal surveys

1. scientific polling is characterized by:

a) random sampling
b) personal bias
c) limited questions
d) informal methods

1. what can affect the reliability of a polls results?

a) the number of questions asked
b) the sample size and methodology
c) the time of day the poll is conducted
d) the location of the interview

Explanation:

1. Exit polls are taken right after voters have cast their ballots to gather data on voter demographics and immediate voting - related information. They are not for predicting future elections, reporting live results (as they are taken during the voting process), or conducting informal surveys.
2. Scientific polling aims to be objective and representative, and random sampling is a key characteristic to ensure that the sample is representative of the population. Personal bias is to be avoided, and it uses formal methods with well - designed questions, not limited questions or informal methods.
3. The sample size and methodology are crucial for the reliability of a poll's results. A small or non - representative sample can lead to inaccurate results. The number of questions, time of day, and location of the interview can have some impact but are not as fundamental as the sample size and methodology.

Answer:

1. B. To gather data on voter demographics
2. A. Random sampling
3. B. The sample size and methodology