distributions Flashcards
What is a normal distribution?
Where recording frequency of distribution of certain variables more ppt are in middle with fewer each side - like a U shape
Where does the median lie on a normal distribution graph?
highest point
Where does the mode lie on a normal distribution graph?
highest point
Where does the mean lie on a normal distribution graph?
highest point
what is a skewed distribution?
scores are asymmetrical with most scores on one side
What does a positive skew look like
Starts low goes high
What does a negative skew look like?
starts low then goes higher
where does the mean lie on a postive skew ?
mean scores at the lower end of the graph (beginning) and outliers at the end
Where does the mean lie on a negative skew?
mean at the higher end of the graph (end) and outliers at the lower end of the graph (the start)
median on skewed distribution
in between the mean and the mode
mean on skewed distribution
pulled towards the tail as effected by extreme scores