1.   Explain why the height example satis?es the criteria for valid metrics.
2.   A study of grade school children found a high correlation between shoe size and reading ability. Does this mean that shoe size is a good measure of intelligence?
3.  Explain why money is a ratio scale measure and not just an interval scale.
4.  Explain why GPA is not sound by measurement theory.
5.  Why is complexity not readily measurable?