Statistics for Business: Decision Making and Analysis, 3rd Edition

Think About It

1. 21.

   1. cross sectional

   2. Whether opened an IRA (categorical), Amount saved (numerical, $)

   3. Did employees respond honestly, particularly when it came to the amount they reported to have saved?

2. 23.

   1. cross sectional

   2. Service rating (probably ordinal, using a Likert scale)

   3. With only 500 replying, are these representative of the others?

3. 25.

   1. time series

   2. Exchange rate of U.S. dollar per Canadian dollar (numerical ratio of currencies)

   3. Are the fluctuations in 2016 typical of other years?

4. 27.

   1. cross sectional

   2. Quality of graphics (categorical, perhaps ordinal from bad to good) Degree of violence (categorical, perhaps ordinal from none to too much)

   3. Did some of the participants influence opinions of others?

5. 29.

   1. cross sectional (could be converted ...