Business Statistics in Practice 3rd Canadian Edition By Bruce – Test Bank

Business Statistics in Practice 3rd Canadian Edition By Bruce – Test Bank

Chapter 1 Content 

Student: ___________________________________________________________________________

1. A population is a set of units (usually people, objects, or events).True    False

2. If we examine half of the population measurements, we are conducting a census of the population.True    False

3. A random sample is selected so that, on each selection from the population, every unit remaining in the population on that selection has the same chance of being chosen.True    False

4. A process is in statistical control if it does not exhibit any unusual process variations.True    False

5. An example of a quantitative variable is the make of a car.True    False

6. An example of a qualitative variable is the fuel efficiency of a car, measured in L/100km.True    False

7. Statistical inference is the science of using a sample of measurements to make generalizations about the important aspects of a population of measurements.True    False

8. If we sample without replacement, we do not place the unit chosen on a particular selection back into the population.True    False

9. By taking a systematic sample, in which we select every 100^th shopper arriving at a specific store, we are approximating a random sample of shoppers.True    False

10. Nonresponse reduces the sample size and may have a negative impact on the generalization of results if the individuals who do not respond are themselves nonrandom.True    False

11. Undercoverage is when some units of the population are mistakenly included in the sample.True    False

12. Suppose that the six students listed belearning Objective: w have applied for a bursary.1. Justin 2. Gordon 3. Ahmed 4. Melanie 5. Olga 6. IanOnly three students can receive the bursary. Because they have all met the criteria for the bursary, the three students who will receive the bursary will be selected at random. Consider the follearning Objective: wing list of random digits from a random number table:27102 56027 55892 33063 41842 81868 71035 09001 43367 49497 54580 81507Starting with the leftmost digit, use this list of random digits to choose a simple random sample of three students from the six students listed above. The sample you obtain isA. Olga, Ian, and Ahmed.B. Melanie, Ahmed, and Ian.C. Justin, Gordon, and Olga.D. Justin, Gordon, and Gordon again.E. any set of 3 names, but we must exclude Gordon.

13. Ratio variables have the follearning Objective: wing unique characteristic:A. Meaningful orderB. An arbitrarily defined zero valueC. Categorical in natureD. Predictable with 100% accuracyE. Equal distance between points

14. When we are choosing a random sample and we do not place chosen units back into the population, we areA. sampling with replacement.B. sampling by convenience.C. using a systematic sample.D. using a voluntary response sample.E. sampling without replacement.

15. Which one of the follearning Objective: wing is a quantitative variable?A. The make of a TV.B. A person’s gender.C. A person’s height.D. Whether a person is an university graduate or not.E. Whether a person has a credit card.