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 5 STATISTICS CONCEPTS 

EVERY DATA SCIENTIST MUST KNOW 


1. MEASURES OF CENTRAL TENDENCY 

MEAN - MEDIAN -MODE 


2. MEASURES OF SPREAD 

RANGE - STANDARD DEVIATION - 

VARIANCE -IQR(INTERQUARTILE RANGE) 


3. MEASURES OF SHAPE 

SYMMETRIC (BELL CURVE) 

SKEWNESS(POSITIVE/NEGATIVE)

KURTOSIS (LEPOKURTIC/MESOKURTIC/ PLATYKURTIC) 


4. HYPOTHESIS TESTING

NULL HYPOTHESIS 

CONFIDENCE INTERVALS 


5. COVARIANCE AND CORRELATION 

PEARSON CORRELATION 

SPEARMAN RANK CORRELATION




 


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