Mth 302 solved quizs

8 Which of the following is quantitative data?
A) Your gender.
B) The brand of cell phone you own.
C) Whether or not you have an American Express card.
D) The fuel economy (MPG) of your car.

9 Your rating of the food served on your most recent airline flight (using a scale of 0 =
gross, 1 = decent, 2 = yummy) is ___________ data.
A) nominal
B) ordinal
C) interval
D) ratio

10 Which statement is correct?
A) Likert scales are inte rval only if scale distances are meaningful.
B) Cross-sectional data are measured over time (e.g., by year, month, etc.).
C) A census is preferable to a sample for most business problems.
D) Stratified samples are usually cheaper than other methods.

11 Which is most nearly correct regarding sampling error?
A) It can be eliminated by increasing the sample size.
B) It can be eliminated by using Excel's =RANDBETWEEN function.
C) It can be eliminated by utilizing systematic random sampling.
D) It cannot be eliminated because of the nature of sampling.

12 A hospital selects thirty patient folders from a filing cabinet containing 812 patient
folders by choosing every 27th patient folder. Which sampling method is this?
A) Simple randomsample.
B) Systematic sample.
C) Stratified sample.
D) Cluster sample.

13 From its 32 regions, the Federal Aviation Administration randomly selects 5 regions, and
then randomly audits 20 departing commercial flights in each region for compliance with legal
fuel and weight requirements. This most nearly resembles
A) simple random sampling.
B) systematic random sampling.
C) two-stage cluster sampling.
D) judgment sampling

14 Which statement is false?
A) Randomdialing phone surveys have low response and are poorly targeted.
B) Selection bias means that many respondents dislike the interviewer.
C) Simple random sampling requires a list of the population.
D) Web surveys are economical but suffer from non-response bias.
15 Professor Hardtack chose a sample of 7 students from his statistics class of 35 students by
picking every student who was wearing red that day. Which kind of sample is this?
A) Simple randomsample.
B) Judgment sample.
C) Systematic sample.
D) Convenience sample.