1. The final grades of students in a class (A+, A, A-, B+, B, B-, etc.) are an example of which level of measurement?

A)Nominal B) Ordinal C) Interval D) Ratio E) None of the above

2. Bi-weekly salaries of employees in a certain firm are $1,570, $1,310, $1,280, $1,380, $1,410,

$1,570, $1,180 and $1,420. These figures are referred to as:

A)Raw dataB) Histogram.C) Frequency distribution.D) Frequency polygon.E) None of the above.

3. For qualitative data, the relative frequency for a class is computed as

A)Class width divided by class interval.

B) Class midpoint divided by the class frequency.

C) Class frequency divided by the class interval.

D) Class frequency divided by the total frequency.

4. What is the best way to illustrate the results of the study when the variable is qualitative?

A)Pie chart B) Histogram C) Stem plot D) Distribution diagram