Question

#8 when grouping raw data values into a frequency distribution table, what is the optimal number of rows to use for maximum readability?
(a) at most 3 rows
(b) from 3 to 5 rows
(c) from 5 to 10 rows
(d) at least 10 rows
(e) it makes no difference

#9 which of the following is an example of quantitative data?
(a) your student id card number
(b) your driver’s license number
(c) your social security number
(d) your major curriculum
(e) your cumulative gpa

10 which of the following is an example of qualitative data?
(a) your height
(b) your weight
(c) your cumulative gpa
(d) your major curriculum
(e) your total earned credits

11 what is the most reliable sampling method to obtain an unbiased sample?
(a) cluster sampling
(b) stratified sampling
(c) systematic sampling
(d) convenience sampling
(e) simple random sampling

Explanation:

• For #8: 5-10 rows balance detail and readability in frequency tables.
• For #9: Cumulative GPA is numerical and measurable (quantitative).
• For #10: Major curriculum is categorical (qualitative), not numerical.
• For #11: Simple random sampling gives every unit equal chance, minimizing bias.

Answer:

C. From 5 to 10 rows
E. Your cumulative GPA
D. Your major curriculum
E. Simple random sampling