RM Flashcards
Hypothesis
H0 and H1 -> stays the same / changes
change views
variable view, nominal, values.
bar chart
analyse, desc stats, frequencies, variable, bar chart
mean
average
median
middle number
mode
most common
histogram
analyse, desc stats, freq, drag both and select histograms with lines
t test
analyse, compare means, one way anova, (group factor, time dependant) options, desc and homog
normal distribution
check histogram curve
homogeneity of variance
should have similar variances p, sig > 0.05
n quota
should be atleast 30
T tests, check 3 things
normal dist, homogeneity of variance and n quota
correlation and regression
can be from -1 to +1, +/- shows relationship
correlation check 3 things
normal dist, linearity, homoscedasticity
homoscedasticity
data points are thickest in centre?
linearity
data points are in a relatively straight line?
Bivariate
analyse -> correlate -> bivariate -> drag both -> ok
chart builder
chart builder -> scatter -> 1st one -> add axis -> double click and add line of best fit.
