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Greek letters are used for sample statistics and Roman letters are used for parameters.
It is useful for a researcher to offer the "don't know" option with the type of questions
that require mental effort to reduce item omissions.
In area sampling, the two-step approach is more costly than the one-step approach
because more areas and time are involved.
If we wanted to use a type of regression that first enters the variable that explains the
most variance, then the variable that explains the second highest level of variance and
so on, we would use ordinal regression.
Exploratory research is used when a great deal of information is already known about
the problem at hand.
It is believed that conducting an interview in the respondent's home improves the
quality of the data and facilitates the rapport between interviewer and interviewee.
Descriptive or causal research are best used to help gain background information about
the problem.
In chi-square, the null hypothesis states that there is no association. When the "Asymp.
Sig." on the SPSS output is low, this means there is low support for the null hypothesis.
