Probability and Significance

1.What value of probability would we use for a stringent statistical test?

• 0.01

• 0.05

• 0.1

What level of significance would cause a type 2 error?

• 0.01

• 0.05

• 0.1

What is the usual level of significance employed in psychology?

• 0.01

• 0.05

• 0.1

What value of probability would we use for a relaxed statistical test?

• 0.01

• 0.05

• 0.1

What level of significance cause a type 1 error?

• 0.01

• 0.05

• 0.1

If my research potentially had a high human cost. what level of significance would I choose?

• 0.01

• 0.05

• 0.1

If I was conducting research in a new area, what level of significance would I pick?

• 0.01

• 0.05

• 0.1

The data is based on an objective scientific measurement = Seconds

Weight (Grams, kilos, pounds, ounces, quarters, eighths, a henry)

Length (Cm, M etc)

• Nominal

• Ordinal

• Interval

The data is in separate categories – e.g. People are short, tall or medium, year groups,

• Nominal

• Ordinal

• Interval

The data is measured as a number

but it is based on a subjective measure

• Nominal

• Ordinal

• Interval