Letters

n

sample size

N

population size

u

population mean

o or s

standard deviation

o2

variance

M

sample mean

Non equivalent group study

A type of

non-experimental research

where groups are made

based on passage of time

when measurement is

completed.

Pre post study

A type of non-experimental

research where the

researcher has no control

over which participants go

into which group

Interpolation

The mean of a

combined sample (the

mean of more than

one sample)

Top

Leptokurtic

Middle

Mesokurtic

Bottom

Platykurtic

Inferential statistics

- Make meaning out of data

- Allow us to generalize conclusions to a large sample