Download Multiple Choice Questions

Multiple Choice Questions
1.
a.
b.
c.
d.
The normal curve is also called a
bell-shaped curve
triangular curve
even curve
s-curve
2.
The normal curve represents a distribution where the __________, ___________, and
___________ are equal to each other.
a. range / standard deviation / variance
b. mean / median / standard deviation
c. mode/ median / standard deviation
d. mean / median / mode
3.
a.
b.
c.
d.
One characteristic of a bell-shaped curve is that it is
linear
bi-modal
symmetrical
leptokurtic
4.
Given a population distribution of women’s heights with a mean of 5 feet 6 inches, which
value is least probable?
a. 5 feet 6 inches
b. 5 feet 10 inches
c. 6 feet 1 inch
d. 5 feet 3 inches
5.
If a distribution has a mean of 100 and a standard deviation of 15, what value would be
+2 standard deviations from the mean?
a. 70
b. 115
c. 130
d. 85
6.
If a distribution has a mean of 50 and a standard deviation of 5, what value would be –1
standard deviations from the mean?
a. 45
b. 50
c. 55
d. 60
7.
If a distribution has a mean of 35 and a standard deviation of 5, what value would be +1.5
standard deviations from the mean?
a. 40
b. 42.5
c. 27.5
d. 30
8.
If a distribution has a mean of 35 and a standard deviation of 5, what value would be -2.5
standard deviations from the mean?
a. 35
b. 20
c. 22.5
d. 47.5
9.
What percentage of scores will fall between –3 and +3 standard deviations in a normal
distribution?
a. 50%
b. 68.26%
c. 95.44%
d. 99.74%
10.
What two scores would divide a normal distribution such that 64.26% of the general
population falls within them if the mean is 100 and the standard deviation is 15?
a. 90 to 110
b. 80 to 120
c. 85 to 115
d. 75 to 125
11.
If a normal distribution of scores has a mean of 100 and a standard deviation of 10, what
percentage of scores would lie above 2 standard deviations?
a. .13%
b. 2.15%
c. 2.28%
d. 97.97%
12.
If a normal distribution of scores has a mean of 100 and a standard deviation of 10, what
percentage of scores would lie below 3 standard deviations?
a. .13%
b. 2.15%
c. 2.28%
d. 99.87%
13.
What percentage of scores lies between the mean and –1 standard deviation for a normal
distribution with a mean of 100 and a standard deviation of 15?
a. +15.00 %
b. –15.00 %
c. 34.13%
d. –34.13%
14.
a.
b.
c.
d.
What percentage of scores lies between 2 and 3 standard deviations below the mean?
+27%
-13%
-7%
2.15%
a.
b.
c.
d.
Standard scores are comparable because
they come from the same sample
they are standardized in units of standard deviations
they have the same distribution means
they are not comparable
a.
b.
c.
d.
Z score is a type of ____________ score.
outlier
standard
normalized
T
15.
16.
17.
a.
b.
c.
d.
The z score for the mean is
+1
–1
0
unable to be calculated given the information
a.
b.
c.
d.
In a normal distribution, what is the z score associated with the mode?
-1
0
+1
There is not enough information.
a.
b.
c.
d.
If a z score = 2.5, it is _____ standard deviations above the mean
1
-2.5
3
2.5
a.
b.
c.
d.
A percentage or area under the curve can also represent the
mean
probability of a score occurring
standard deviation
variance
18.
19.
20.