Chapter 6 Quiz 1. Which choice is another term that can be used to describe a no

Question

Chapter 6 Quiz

1. Which choice is another term that can be used to describe a normal distribution:

(a) independent variable                      

(b) discrete distribution                       

(c) negatively or positively skewed

(d) bell curve

2. Which of the following characteristics does not apply to a theoretical normal distribution?

(a) It is bell-shaped.

(b) The mean, median, and mode are equal.

(c) It is bimodal.

(d) It is never negative.

3. In applied statistics, it is the area under the normal distribution curve which is most important, not the value of single points on the curve.

True

False

4. One normal curve has a mean of 24 and a standard deviation of 3. A second normal curve has a mean of 3 and a standard deviation of 24. The curve that is more dispersed, or spread out, is

(a) the first normal curve.

(b) the second normal curve.

(c) both; they are equally spread out.

(d) neither; by definition,a normal curve shows no spread.

5. The number of standard deviations a particular X value is from the mean is commonly referred to as ________.

(a) z  

(b) P(X)  

(c) C) u   

(d) D) q2

Explanation / Answer

1) Bell curve is another name for normal distribution.

Option D is correct.

2) Option C is correct.

3) True

4) The second normal curve

5) z

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