MTH302 Final Term Solved Paper Mega File

MTH302 FINAL TERM SOLVED PAPER · BY VUSTUDENTS · (VISIT VURANK FOR MORE) · MTH 302 · Chapter No 2

1 The number of FedEx shipping centers in each of 20 randomly-chosen cities would be

ordinal scale data.

A) True

B)

False

2 A categorical (qualitative) variable has values that are described in words rather than

numbers.

A) True B)

False

3 Temperature (measured in degrees Fahrenheit) is an example of ratio data because it has

a zero. A) True

B) False

4 If you randomly sample 50 students about their television viewing habits at one point in

time, the data collected would be referred to as time series data.

A) True

B)

False

Q5. Internet surveys posted on popular websites such as suffer from selection bias.

1. True
2. False

Correct answer: True

6 Which statement is correct?

A) Class standing (freshman, sophomore, junior, senior) would be ratio data.

B) Sampling without replacement introduces bias in our estimates.

C) In a random number table, every digit is equally likely to occur.

D) Focus groups usually work best without a trained moderator.

7 Which variable is least likely to be regarded as ratio data?

A) Length of time required for a randomly-chosen vehicle to cross a toll bridge (minutes).

B) Weight of a randomly-chosen casting in a foundry (kilograms).

C) Number of fatalities in a randomly-chosen airline disaster (persons).

D)

Supervisor's rating of a randomly-chosen employee's performance (Likert scale). 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 interval 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 random sample.

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) Random dialing 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

random sample.

B) Judgment sample.

C) Systematic sample.

D) Convenience sample. 1 If you decrease the size of the samples (i.e., the

subgroup size) for an chart, it is necessary to recalculate

your control limits to reflect wider limits.

A) True B) False

2 A p-chart is a type of process control chart that can

be used for plotting the proportion of non-conforming sampled

items. A) True

B) False

3 An in-control process will always exhibit special

cause variation, which is not a reason for concern.

A) True

B)

False

4 If the Cp index is unacceptable, the Cpk index may

nonetheless indicate a capable process.

A) True

B)

False

5 A moving range (MR) chart is appropriate to monitor

variation when every item is being inspected (n = 1) since the

range (R) cannot be calculated.

A) · True · B)

False

6 A process can be considered in a state of control

even if one sample mean is 2.1 standard deviations above the

mean. A) True

B) False

7 W. Edwards Deming

A)

taught quality control techniques to Japanese companies

during the 1950's.

B)

would have been very influential but for his very short

life.

C)

invented control charts and proposed the ISO 9000 standard.

D)

suggested that most quality problems could be blamed on

labor.

8 Which is an appropriate step in continuous quality

improvement?

A)

Taking measurements on a variable and keeping careful

records.

B)

Posting quality banners or company flags where they are

visible to all.

C)

Castigating the lazy employees for their shoddy

workmanship.