Tests of correlation

is Spearmans Ro parametric or non parametric?

Non parametric

When is Spearmans Ro used?

Test of correlation

Repeated measure

Ordinal levels of measurment

Test of correlation

2 Variables from same person

Repeated measure

Samw participant is used for 2 variables

Ordinal levels of measurment

Can be ranked

How do you know results are significant?

Critical value with the calculated or obserevd value must be compared

How is the crtical value found?

• 1 in 20 or P<0.05

• Checkif hypothesis is directional or non directional

• Work out N

Pearsons R’ parametric or non parametri?

Parametric

When is Pearsons R’ used?

• To test for correlation

• For repeated measures

• When there are inteveal levels of measurement

How do you find the critical value of Pearsons R’?

• P < 0.05

• Check whether your hypothesis is one tailed or 2 tailed

• Work out the degrees of freedom [df = N - 2]