1) What measurements assesses the amount of variance of change in the dependent variable reflected by changes in the independent variable?
a) Coefficient of determination ( R- squared),
b) Coefficient of least squares,
c) Coefficient of alineation,
d) correlation coefficient (r),
2) The range of a sample of 10 values is 5 and the largest observation is 50 . The lowest value is:
a) 40
b) 45,
c) 55,
d) cannot be computed from the data given