A clinical psychologist observes that majority of the clients that come to her practice with emotional, mental and behavioural problems are obese. In corroboration with a dietician, the psychologist is interested in knowing whether an experimental feeding regimen is effective in fighting obesity. They enrolled 150 individuals in a study and feed them exclusively on this new feeding regimen for six months. After six months, weights of the individuals were measured. The mean weight was found to be 80kg while the median weight of 60kg was observed. Based on the mean and median weight values, the best measure of variability to use for these data is Median Standard deviation Range Variance Interquartile range Next 00000
