1. If bxy=0.25 and byx=0.64 then find the value of correlation coefficient. *

a) r=0.40

b) r=0.570

Other:

2.Rank correlation method was developed by ______________. *

1 point

Karl Pearson.

Spearman.

Other:

If bxy = 0.20 and rxy = 0.50, then byx is equal to: *

1 point

0.20

0.25

1.25

Find byx equations for X+2Y-3=0, 2X+3Y-8=0 *

1 point

a) -1.5

b) 1.5

c) .5

Other:

Calculate the Simple moving average, when time period is 3 and the 95,100,87,123,90,96,75 *

1 point

87

85

90

Other:

Find Correlation Coefficient from two Regression line equations X+2Y-5=0, 2X+3Y-8=0 *

1 point

a) r= -0.866

b) r= -0.86

c) r= -0.8

In a straight line equation Y = a + bX; a is the: *

1 point

X-intercept

Slope

Y-intercept

In a straight line equation Y = a + bX; b is the: *

1 point

Slope

X-intercept

Y-intercept

The fire in a factory is an example of: *

1 point

Cyclical variations

Seasonal movements

Irregular variations

Other:

If regression line of = 5, then value of regression coefficient of Y on X is: *

1 point

0

1

5

All data points falling along a straight line is called: *

1 point

a) Linear relationship

b) Non linear relationship

c) Scatter diagram

Other:

find the regression line x on y from following data

x-4 4 1

y-5 13 12