reading quiz 5 Flashcards
1
Q
Approximately _____ percent of the values under a normal curve fall within 1 SD (standard deviation) of the mean.
A
68
2
Q
The mean of a z distribution has a value of _______.
A
0
3
Q
The standard deviation of a z distribution has a value of _______.
A
1
4
Q
Which of the following z scores reflects the raw score farthest from the sample mean?
-3.2
-1
0
3
A
-3.2
5
Q
true or false
Transforming raw scores into z scores changes the shape of the distribution.
A
false
6
Q
Approximately .13% of scores in a z distribution fall beyond a z score of 3.0. About what percent of scores would fall below a z score of -3.0?
A
.13
7
Q
three answers
characteristics of the normal curve
A
- The normal curve is symmetrical
- The normal curve is bell-shaped
- The normal curve has one inflection point on either side of the mean
8
Q
In a normal (symmetrical) curve, the values of the mean, median, and mode are _______________.
A
Identical
