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1. A
population is a set of existing units.
2. If
we examine some of the population measurements, we are conducting a census of
the population.
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.
4. A
process is in statistical control if it does not exhibit any unusual
variations.
5. An
example of a quantitative variable is the make of a car.
6. An
example of a qualitative variable is the mileage of a car.
7. Statistical
inference is the science of using a sample of measurements to make
generalization about the important aspects of a population of
measurements.
8. If
we sample without replacement, we do not place the unit chosen on a particular
selection back into the population.
9. By
taking a systematic sample, in which we select every 100th shopper
arriving at a specific store, we are approximating a random sample of
shoppers.
Multiple Choice Questions
10. Statistical
methods help to:
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