The data set contains a total of 85 institutions, divided into two categories: statesupported
institutions and independent institutions.
1.
Suppose we want to select a representative sample of 30 institutions from this list.
The 30 institutions that are chosen should contain a representative number from
each of the two categories. Explain in detail how you would obtain a representative
sample of 30 institutions to be selected (be as specific as possible so that your lab
instructor can follow your steps and obtain the same sample you obtained). Explain
the logic behind what you are doing, and list the names of the 30 institutions that
your procedure selects and the current enrollment (column B) for each.
First of all, the proportion of state supported to independent institutions must be found. There are
exactly 17 state institutions, and 68 independent institutions. 68 divided by 85 gives 0.8, and 17
divided
by 85 gives 0.2. 0.8 multiplied by 30 gives 24, the representative number of independent institutions
that should be in the sample. 0.2 multiplied by 30 gives 6, which is the representative number of
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 Fall '06
 Basu
 representative, National Association of Independent Colleges and Universities, Southern Association of Colleges and Schools

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