Business Statistics

500 Business Statistics

where

yx

b

xx

S

S

SS

=

SSE

2

yx

S

n

=

−

( )

2

2

xx

x

SS x

n

= −

∑

∑

F statistic for testing slope

MSR

MSE

F =

where

SSR

MSR

SSE

MSE

1

k

n k

=

=

− −

,

SSR

MSR

SSE

MSE

1

k

n k

=

=

− −

, and k = Number of independent (explanatory) variables in the regression model (In case of simple

regression k = 1)

Estimateofcondenceintervalforthepopulationslope(b

1

)

b

1

± t

n – 2

S

b

tstatisticfortestingthestatisticalsignicantcorrelationcoefcient

2

1

2

r

t

r

n

−

=

−

−



where

2

r r= +

, if

1

b 0≥

and

2

= −r r

, if b

1

< 0.

caSe StUDY |

Case 14: Boom in the Indian Cement Industry: ACC’s Role

Introduction

The Indian cement industry was delicensed in 1991. After China, ...