Statistical Analysis Flashcards
Mean
The average of a set of numbers
Median
The mid-point of a set of numbers
Mode
The number that occurs most frequently in a set of numbers
Variance
The average deviation from the mean. Square of standard deviation. (average difference from the mean)
Standard deviation
the amount of dispersion in a set of numbers (square root of variance)
Correlation
relationship between two things.
Positive Correlation
as one variable goes up the other variable also goes up
Negative Correlation
as one variable goes up the other variable goes down
Chi-Square
Used to compare two groups
Mann-Whitney U
Ordinal data or rankings
t-Test
measuring intervallic or ratio ranking
ANOVA
Analysis of Variance - similar to a t-Test but with more than two groups
Spearman rank correlation
relationship of ordinal data
central tendency
the tendency of samples in a given measure to cluster around one point
