The distinguishing feature of probability samples is that:
a. they involve personal judgment somewhere in the selection of sample elements.
b. each population element has an equal chance of being included in the sample.
c. each population element has an equal chance of being included in the sample and every combination of n population elements is a sample possibility.
d. each population element has a known chance of being included in the sample.
e. they will always be more representative of the population than nonprobability samples.
Question 2
A researcher wants to study the effects of social class on consumption behavior. He establishes three different categories of social class in terms of amount of income. He then assigns each field worker a specified number of interviews with people in each income category although the interviewers are allowed to select who they interview. This is an example of:
a. probability sampling.
b. stratified sampling.
c. systematic sampling.
d. quota sampling.
e. random sampling.
Cross-sectional data showing that the amount of effort spent on personal health care increases with
Dosimeter or personal radiation badge.
Good ethical judgment comes from both learning and experience.
Discrete random variables- Probability Distribution Function
Probability Values of Chi-Square Analysis
Conditional Probability Formulas