liesdamned liesand statistics these four data sets are statistically similar they have the same mean value for ( )the same mean value for ( )the same variance for ( )the same variance for ( )and the same correlation between and ( furthermoreif we use linear regression to fit line to eachwe get the same result for eachy does this mean that there is no obvious way to distinguish these data sets from each othernoone simply needs to plot the data to see that the data sets are not at all alike the moral is simpleif possiblealways take look at some representation of the raw data