Lecture 3.2 Flashcards
1
Q
central tendencies in a normal distribution
A
- media = mean = mode
2
Q
central tendencies in positively skewes
A
mode > median > mean
3
Q
central tendencies in negatively skewes
A
- mean > median > mode
4
Q
others normalized standard scores
A
- stanine
- c score
- Sten
- for all: SD = 2
5
Q
summative assesment
A
- how well someone performed
6
Q
formative assignment
A
- how well someone is doing right now
7
Q
methods of norm group collecting
A
- random
- stratified random (most common)
- arbitrary (also common)
8
Q
requirements for norm sample sizes
A
- important: > 300
- less important: > 100
9
Q
Flynn effect
A
- IQs rise in some countries, drop in others
- possible explanatin: similar tests are more or less prominent
10
Q
most common cut-offs
A
- low: > 2 SD below
- below average: > 1 SD below
- average: -1 and +1 SD
