Answer: The following statement is true about indexes and scales: <em><u>They rank-order the units of analysis in terms of specific variables.</u></em>
<u><em>Indexes</em></u> provides with a way to make a complex measure that iterate consequence for multiple rank-ordered related questions or statements.
<u><em>Scale</em></u>is a type of complex measurement that is combined of several items that have a empirical structure among them.
