Chapter One Q4 and Q10

These are the solutions to two questions in the textbook from Chapter 1.

4.            a.           10 just count the number of ‘elements’…the column on the left side

                b.            All brands of minisystems manufactured. This is because we have a sample of 10 minisystems. It says sample in the question. For sure there are many more than 10 minisystems being manufactured. Here we have a sample of ten from that population

                c.             Average price = 3140/10 = $314

                d.            $314

10.          a.            Quantitative; ratio scale of measurement

Age is a quantitative ratio variable. There is a meaningful zero.

                b.            Categorical; nominal scale of measurement

                c.             Categorical; ordinal scale of measurement since the responses can be ordered from earliest (high school) to latest (retirement)

                d.            Quantitative; ratio scale of measurement

                e.            Categorical; nominal scale of measurement