Exam 9: Population, Samples, and Sampling

A "snowball" sample is

If percentages total to 100% within categories of the dependent variable they are calculated correctly.

The "n= " refers to the number of cases in a data table.

Rule 2 for percentages says to compare percentages across categories of the dependent variable.

Combining variables is one type of data transformation.

Results: "62% blondes and 75% non-blondes report having fun." The researcher followed Rules 1 & 2.

Elaboration refers to testing the bivariate relationship.

f column totals are the percentage base, percentages cannot be compared across rows.

With a SRS every possible sample of size n has the same probability, implying that elements also are equally probable.

A probability sample that classifies the population into groups is called a

A third text principle to judge science information is whether the study replicates findings from other studies.

A data matrix has a line for each variable category.

A probability sample requires a sampling frame.

An abstract is a short summary about the research described in a research report.

"For whites, attending college in the South versus the North leads to less prejudice.", The independent variable would be "level of prejudice."

"For whites, attending college in the South versus the North leads to less prejudice." The control variable would be "race."

If percentages are calculated within columns, they are calculated correctly.

Snowball samples are probability samples.

One should not use "prove" in reporting findings because it implies finality.

Another scientific principle to judge everyday information is look for vested interests of the researcher.