2 questions each on consturction of frequency distribuition, arithmetic mean, median, mode, gemoetric mean, harmonic mean (ungrouped andgrouped data), range, mean deviation from mean , mean devaition from median, variance, standard deviation, quartile deviation for( ungrouped and grouped data), quartile deviation, co efficient of mean deviation, coefficient of variation, calculation of true moments, skewness and kurtosis with interpretation, simple correlation, multiple correlation and partial corelation, calculation of regressive X ON Y and Y on X