Hypothesis testing quiz

Based on the graph, will the condition have a significant effect on the DV?

• Yes, a significant effect

• No, a non-significant effect

Which of the follow does NOT affect statistical power?

• Alpha level

• Effect size

• The median

• Sample size

What is is a p-value?

• The probability that the null hypothesis is true

• The probability of seeing the effect, or a larger effect, given the null hypothesis

• The probability that the alternative hypothesis is true

• The probability that the result is due to chance

Based on the graph, will condition have a significant effect on the DV?

• Yes, a significant effect

• No, a non-significant effect

In an ANOVA, what is the null hypothesis?

• That all of the means will be significantly different

• That none of the means will be significantly different

• That the means will be exactly the same in the sample

• That one mean will be significantly different from the others

Based on the graph, will there be a significant difference between these means?

• Yes, a significant difference

• No, a non-significant difference

What is the meaning of "statistically significant"?

• The statistical effect is practically important

• We are unlikely to get the result given the null hypothesis

• The effect is not due to chance

• We are unlikely to get the result given the alternative hypothesis

The higher the number of tests, the higher the...

• Standard deviation

• Sample size

• Familywise error

• Alpha level

Based on the graph, will there be a significant difference between the means?

• Yes, a significant difference

• No, a non-significant difference

What is a type 2 error?

• False negative

• Familywise error

• Standard error

• False positive