welcome to stats
a bell curve represents
what is a normal distribution
What is the IV
independent variable: the variable being manipulated
research that uses numerical data
quantitative
comparing the mean scores between two non associated samples
independent t - test
testing the same participants at multiple time points
within subjects design
in a normal distribution where do most of the scores fall
closest to the mean
what is the DV
dependent variable: variable being measured
prediction about an experimental outcome
hypothesis
paired sample t-test is
a test that compares the mean scores between two related samples
p=0.75
not significant
mean, mode and median are are measures of what
central tendency
the consistency of a psychometric measure is?
reliability
a prediction that there will be no significance differences between groups
null hypothesis
conducting a test where different groups of participants are exposed to different experimental conditions is __________
same participants exposed to multiple conditions _____________
between subjects design : within subjects design
interpret 3*(3*3)
mixed design
IVs 3
levels 3, 3 & 3
conditions 27
Z score is an example of what?
a standardised score
how well a psychometric measure tests what it is meant to test?
validity
main issue with conducting Laboratory observational research
ecological validity: can results be generalised outside of the lab
what is a one way ANOVA?
analysis of variance: tests 2 or more groups between subjects design
interpret each part of this:
F (1, 22) =1.29, p=.268
F: ANOVA out put test
(df groups,df participants)
F statistic
P value
95% of the population fall between what z scores below and above the mean
-1.96 to 1.96
research that does not use numerical data
qualitative
what research design would i use if i want to look at the effect that hours of study has on exam results
correlational design
repeated measures ANOVA
within subjects analysis of variance: tests same participants at multiple time points or with multiple conditions
what is a p value
a number calculated from a statistical test that allows you to determine how likely you are to have found a particular set of observations