Question Details

1. A population is a set of existing units. 
True    False

2. If we examine some 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 has an equal chance of being chosen. 
True    False

4. A process is in statistical control if it does not exhibit any unusual 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 mileage of a car. 
True    False

7. Statistical inference is the science of using a sample of measurements to make generalization 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