L3 - Statistical Infrequency

Question 1

What is statistical infrequency in terms of abnormality?

Answer 1

A person possesses an uncommon characteristic relative to the rest of the population and are statistically rare traits

Question 2

What trait is an example of something statistically infrequent?

Answer 2

IQ over 130 (2.5%)

Question 3

What graph can be drawn

Answer 3

Normal distribution curve

Those at extreme ends are rare

Question 4

Normal distribution curves skewed towards the right (high at the left) are

Answer 4

Positively skewed

Question 5

Graphs skewed towards the left (high at right) are

Answer 5

Negatively skewed

Question 6

Advantage related to being a good thing?

Answer 6

Just because infrequent doesn’t mean the abnormality is negative
E.g. IQ over 130 infrequent as IQ below 70
Makes infrequencies seem positive sometimes

Question 7

Advantage related to data?

Answer 7

Uses objective, scientific, unbiased data

Unlike FtFA which requires subjective decisions

Question 8

Disadvantage related to cut off points?

Answer 8

Data may be objective but cut-off points between frequent and infrequent is humanely decided
IQ of 71 normal but 70 isn’t although 1 point difference?