If a researcher has a population of college students from which a sample has been drawn and concludes that on average there are higher grades achieved by those students who live on campus than those who commute, higher grades is an example of what?
a. a sample element
b. a population parameter
c. a sample statistic
d. an unreliable result
Question 2
Which of the following is not a probability sample characteristic?
a. probability samples are never perfectly representative
b. probability samples are usually more representative than other sampling techniques
c. probability sampling lets us estimate the accuracy of the sample
d. probability sampling is always representative of the population.
The world attempted to deal with Somalia as if it were a real country but painfully learned that Som
Population Projections of the United States
Population Growth Versus Stability
World Population, 1850–2150
Relationship Between Income per Capita and Population Growth
Typical bacterial population growth curve showing the initial lag phase