CHAPTER 1
What term is used to identify the entire group of individuals
that a researcher would like to study?
Population
Although researchers are usually interested in very large
groups, such as all of the adolescents in the United States,
they typically select smaller groups to actually participate in
their research studies. What are these smaller groups
called?
Samples
Organizing a set of scores in a graph would be an example
of _____________.
Descriptive statistics
Statistical techniques that use the limited information from
samples to make general conclusions about populations are
called ________ .
Inferential statistics
The 721 students in the new freshman class have an
average combined mathematics and verbal SAT score of
1220. If you selected a sample of 50 new freshmen and calculated their average combined score, what value would you obtain?

What is the value of ∑X for the following scores: 3, 2, 5?10What is the first step to be performed when computing ∑(X + 1)2?Add 1 t each score valueCHAPTER 2Which of the following is a method for obtaining n for the scores in a frequency distribution table?Add the values in the f column.In a grouped frequency distribution one interval is listed as 50-54. What are the real limits of this interval?

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