My Notes Ask Your Teacher 2. -15 points DevoreStat9 12.E.075 An investigation was carried out to ...

Ans:

a)

slope,b=(11*660.15-205.5*35.15)/(11*3881.08-205.5^2)=0.0830

intercept=(35.15-0.08302*205.5)/11=1.6445

y'=0.0830x+1.6445

where x=speed, y =rate

b)

slope,b=(11*660.15-205.5*35.15)/(11*112.661-35.15^2)=10.2241

intercept=(205.5-10.22409*35.15)/11=-13.9888

y'=10.2241x-13.9888

where x=rate,y=speed

c)

For a,

r=(11*660.15-205.5*35.15)/SQRT((11*3881.08-205.5^2)*(11*112.661-35.15^2))=0.9213

R^2=0.9213^2=0.849

For b,

r=(11*660.15-205.5*35.15)/SQRT((11*112.661-35.15^2)*(11*3881.08-205.5^2))=0.9213

R^2=0.9213^2=0.849

d)Both are same.