probability and significance Flashcards
1
Q
what value helps determine if results are significant
A
calculated value
2
Q
what is calculated value compared with and why
A
-the critical value in the statistical tables to see significance
3
Q
factors effecting which critical value is used
A
-one or two tailed
-number of participants
-the p-value
4
Q
what p value is normally used within psychology
A
-p value of 0.05, 5% likelihood that findings are due to chance and 95% likelihood that findings are caused by the variable interaction
5
Q
type I error
A
when null hypothesis is rejected and experimental hypothesis accepted (false positive) - due to p-value being above 0.05
6
Q
type II error
A
when null hypothesis is accepted and experimental hypothesis rejected (false negative)- due to p-value being below 0.05
