STATISTICS IS...

TWO AREAS OR SUBDIVISIONS OF STATISTICS

DESCRIPTIVE STATISTICS

INFERENTIAL STATISTICS

NOMINAL DATA

ORDINAL DATA

METRIC DATA

DISCRETE VARIABLE

CONTINUOUS VARIABLE

INTERVAL SCALE

RATIO SCALE

RELATIVE FREQUENCY

CUMULATIVE RELATIVE FREQUENCY

THE 5 QUALITIES OF A GREAT VISUALIZATION OF DATA
(BE FIT)

RULES FOR A GRAPHIC REPRESENTATION OF DATA

MEAN

MEDIAN

MODE

THE BOXPLOT

VARIABILITY

VARIANCE

STANDARD DEVIATION

CHARACTERISTICS OF THE STANDARD DEVIATION

COEFFICIENT OF VARIATION

CORRELATION COEFFICIENT (metric data)

CHI SQUARE (nominal data)

CRAMERS V

COVARIANCE

DIRECT CORRELATION VS. INDIRECT CORRELATION

REGRESSION

COEFFICIENT OF DETERMINATION (r2)

PROBABILITY

NORMAL DISTRIBUTION

CHARACTERISTICS OF A NORMAL DISTRIBUTION

CALCULATE WITH NORMAL DISTRIBUTIONS

STANDARD NORMAL DISTRIBUTION

CENTRAL LIMIT THEOREM

CONFIDENCE INTERVALS

MARGIN OF ERROR

HOW TO TEST AN HYPOTHESIS?

NULL HYPOTHESIS (HO)

ALTERNATIVE HYPOTHESIS (H1)

TYPE 1 ERROR (P= ALFA)

TYPE 2 ERROR

CORRECT JUDGEMENTS WHEN TESTING A HYPOTHESIS

PROCEDURE FOR A STATISTICAL TEST
(5 STEPS)

ANSWER WHEN YOU ACCEPT H0

ANSWER WHEN YOU DON'T ACCEPT H0