1
Q
A
2
Q
If using PMCC why do the variables have to be random
A
A random sample enables proper inference about the population to be undertaken
A random sample is unbiased .
For the hypothesis test (using PMCC) to valid it is necessary to assume that the sample is random
3
Q
A
4
Q
A
A is independent as values are not subject to random variation
5
Q
A
Because this would be extrapolation and it is possible that the relationship is different for young children
6
Q
A
7
Q
A
Because the values of a are non random so it makes no sense to try predict them
8
Q
A
9
Q
A
10
Q
A
Emphasis on the “valid”
11
Q
A
12
Q
A
13
Q
A
“Underlying distribute may not be normally distributed “
14
Q
A
15
Q
A
16
Q
A
17
Q
A
