12) Probability sampling requires
A) questioning as many people as possible.
B) mostly guesswork.
C) a precise cross-section of the population.
D) that every member of the population have an equal chance to be interviewed.
13) In polling for a population of 500,000 or greater, how many people are needed for 95 percent
confidence with less than 5 percent error margin?
A) 384
B)1,483
C) 3,840
D) 18,340
14) A good probability sample selection for polling
A) requires polling one in every six people.
B) gives every member of the population being sampled an equal chance.
C) will include an equal number of males and females.
D) will vary depending on the topic.
15) The margin of error for a survey is
A) insignificant if enough people are surveyed.
B) critical to determine accuracy.
C) good enough as long as it’s near 5 percent.
D) needs to be 2 percent or lower for any level of confidence.
16) What kind of sampling matches the demographics of the people polled?
A) probability sampling
B) geo-demographic sampling
C) quota sampling
D) measured-interval sampling
17) Why is it important to know when a poll was taken?
A) Opinions shift over time.
B) Weather impacts people’s emotions
C) People are more alert in the morning, less so in the evening
D) Most people aren’t home during the day, thus skewing the sample