coefficient of variation

The average number of computer sales over a 2-month period is 86, with a variance of 36. The average of the commissions is $4,444 with a standard deviation of $888. Find the coefficient of variations of the two and state which is more variable. => 6.3%, 14.8%, commissions or 6.9..

Which of the following statement(s) is/are false? I. The multiple correlation coefficient is always higher than the individual correlation coefficients. II. The coefficient of multiple determination denoted by R 2 , is the amount of variation explained by the..

The force that acts during m otion between the two bodies in contact is called the kinetic frictional force. Once the block is in motion and the value of the applied force is just equal to the value of kinetic friction, the block neither accelerates not decelerates but moves with a constant velocit..

The university authorities wants to analyse the relationship between the student's score in a mathematics examination ( y ), age ( x 1 ) and score in statistics examination ( x 2 ). Determine the (i) multiple correlation coefficient (ii) the coefficient of determination and (iii..

The weight of a calf taken at weekly intervals from the time of birth are shown. The equation of the regression line is y ′ = 20.607 + 4.559 x . Find the coefficients of determination and nondetermination and comment on the variation. Age (weeks) ( x ) 1 2 3 4 5 6 7 8 Weig..

. For an individual series, For a frequency distribution, Variance = (S.D.) 2 Coefficient of variation (C.V) Let s 1 and s 2 be the S.D of the two groups containing n 1 and n 2 items respectively. Let a..

The diagram below shows an arrangement to study the effect of temperature difference between the two junctions in a Cu-Fe thermocouple. Keeping the junction B at 0 o C, the temperature of junction A is increased. The graph below shows the variation of the thermo emf with the temperat..

where g is a positive constant, called damping coefficient of the medium and may be looked upon as the resistive force per unit velocity. So that, if there is no other force, other than this resistive or damping force, acting on the oscillating body or particle, of mass m, we have, in acc..