Use reg no 134 Q.1 From the set of data X having the values last number of your registration number as X1 is the last digit of your registration number, X2=X1+1, X3=X2+2 and X4=X3+3, then (5+5) I....

Extracted text: Use reg no 134 Q.1 From the set of data X having the values last number of your registration number as X1 is the last digit of your registration number, X2=X1+1, X3=X2+2 and X4=X3+3, then (5+5) I. Show that the sum of the deviations of the observations Xi's from their mean, is equal to zero. II. Show that sum of square of devotion form mean is minimum than the sum of squared devotion from any other arbitrary value