Inferential/ Statistical Testing Flashcards
After research has been analysed using descriptive statistics, we need to know if results are…
Significant or non significant
What do stats tests allow the psychologist to do?
Determine the likelihood that the results/ difference/ correlation are due to change or the IV/ co-variables
Researchers begin their investigation by writing a…
Hypothesis
What types of hypothesis must researchers write?
An alternative
A null that states there is no difference/ association between the variables as any difference is due to chance or error.
What does a statistical test tell us?
Which hypothesis is likely to be most probably out of the experimental or null.
What is the conventional significance level?
Less than 5% (p<0.05)
What does less than 5% mean?
There is less than 5% probability that the results occurred by chance/ extraneous variables and more than a 95% probability that the results were due to the changing IV/ relationship between co variables.
What does a statistical test provide us with?
A calculated or observed value
What do you compare your calculated or observed value to?
A critical value
What does the critical value decide?
Whether or not the calculated value is significant
If the calculated value is significant then we can accept our…
Alternative hypothesis and reject the null.
If the calculated value is not significant then we must accept…
The null hypothesis and reject the alternative.
What is the rhyme to remember the stats table?
NO RIC Students Come College When Miss Says Ric U Part-timer
Repeated or matched pairs with nominal data?
Sign test
Repeated or matched pairs with ordinal data?
Wilcoxon
