Normal Distribution and Z Scores Flashcards
1
Q
How many scores are within 2 standard deviations?
A
~27%
2
Q
How many scores are within 1.96 standard deviations?
A
95% or about 19/20
3
Q
How do you formulate a z score?
A
(Score-mean)/S.D
4
Q
What can you use z scores for?
A
.Comparing scores which are on different scales
.To figure out what % of scores are above or below a certain score
.Shows how someone scores compared to others
5
Q
Usually, how many scores are within 1 standard deviation?
A
~68%
