At the end of the module, the students will be able to know thefollowing:The computation and interpretation for measures of CentralTendencyComputation and interpreattaions for measures ofVariability
MEASURES OF CENTRAL TENDENCY Mean- the most common measure of center and is alsoknown as the “ arithmetic average ”.
MEASURES OF CENTRAL TENDENCY Median – it is the point Mode – refers to the that divides the scores in scores that occurred a distribution in two most in the distribution. equal parts
Measures of Variability This is used to describe the spread out of the scores in adistribution that is above or below the measures of centraltendency. There are three commonly measures of variability:The rangeThe quartile deviationAnd the standard deviation
Three commonly measures of variability: Range – the difference between the highest score and lowest score in the data set. Quartile Deviation – The half of the difference between the third quartile and the first quartile. Standard Deviation – the most important and useful measure of variation, it is the square root of the variance.