1.
What is the best way to represent the shape of a large population of measurements? a.
A histogram b.
A frequency curve c.
A bell-shaped curve d.
None of the above
2.
Which of the following describes measurements that have a normal distribution? e.
The majority of the measurements are somewhere close to the average. f.
The farther away you move from the average, the fewer individuals will have those more extreme values for their measurements. g.
The mean of the measurements is located in the middle of the bell-shaped curve. h.
All of the above.
3.
Suppose one individual in a certain population had a z-score of −2. Which of the following is true? i.
This is a bad thing because the individual is below average. j.
This individual’s measurement is 2 standard deviations below the mean. k.
This individual’s original measurement was a negative number. l.
All of the above are true.
4.
Suppose the mean height for adult males in the U.S. is about 70 inches and the standard deviation is about 3 inches.
Assume men’s heights follow a normal curve. Using the Empirical Rule, 68% of adult males should fall into what height range? m.
Between 67 and 73 inches tall. n.
At or below 68 inches tall. o.
Between 64 and 76 inches tall. p.
None of the above.