Statistical Testing- Probability, Chance and Significance Flashcards
What are inferential statistics?
A type of statistical analysis that allow researchers to determine whether they have found a significant result or if it occurred by chance.
What can we determine with inferential statistics?
Which of our hypothesis (alternative/null) should be accepted and rejected.
What do inferential statistics allow us to make?
Inferences about the target population from a sample of data.
What is the first step we do to work out whether our test is statistically significant or not?
We are given the calculated value and table of critical value.
Read the no. participants (sign test take the no. participants who got score0 away)
What is the second step we do to work out whether our test is statistically significant or not?
whether the test is one or two tailed
What is the third step we do to work out whether our test is statistically significant or not?
Significance level (always p=0.05 unless stated otherwise). Reading the table gives the critical value.
What is the fourth step we do to work out whether our test is statistically significant or not?
Compare critical value to calculated value. Test will state which one needs to be higher to be significant or not.
What design is the Mann-Whitney test used for?
Independent groups
How is the layout for a Mann-Whitney table?
Both sides of the table is the number of participants in group 1 or 2.
What is the format for writing a conclusion for a statistical test?
The calculated value of X is GREATER/LESS than the critical value of Y. This means the results ARE/ARE NOT SIGNIFICANT. Therefore, we can ACCEPT,REJECT THE NULL HYPOTHESIS.
