1. Question : When using the Chebyshev's theorem to obtain the bounds for 99.73 percent of the values in a population, the interval generally will be _______ the interval obtained for the same percentage if normal distribution is assumed (empirical rule).
Student Answer: narrower than
wider than
the same as
2. Question : An example of a qualitative variable is the mileage of a car.
Student Answer: True
False
3. Question : 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.
Student Answer: True
False
4. Question : All of the following are measures of central tendency except the
Student Answer: range
mode
mean
median
5. Question : Measurements from a population are called
Student Answer: statistics.
observations.
variables.
inferences.
6. Question : A normal population has 99.73 percent of the population measurements within ___ standard deviations of the mean.
Student Answer: one
two
three
four
7. Question : When a population is skewed to the left or right with a very long tail, what is the best measure to use for central tendency.
Student Answer: Population mean
Population mode
Population median
Population standard deviation
8. Question : All of the following are measures of central tendency except the
Student Answer: range
mode
mean
median
9. Question : Which percentile describes the first quartile Q1?
Student Answer: 25th
50th
75th
100th
10. Question : Any characteristic of a population unit is called a
Student Answer: measurement.
sample.
observation.
variable.