```    Program g02cafe

!     G02CAF Example Program Text

!     Mark 26.2 Release. NAG Copyright 2017.

!     .. Use Statements ..
Use nag_library, Only: g02caf, nag_wp
!     .. Implicit None Statement ..
Implicit None
!     .. Parameters ..
Integer, Parameter               :: nin = 5, nout = 6
!     .. Local Scalars ..
Integer                          :: i, ifail, n
!     .. Local Arrays ..
Real (Kind=nag_wp)               :: reslt(20)
Real (Kind=nag_wp), Allocatable  :: x(:), y(:)
!     .. Executable Statements ..
Write (nout,*) 'G02CAF Example Program Results'
Write (nout,*)

!     Skip heading in data file
Read (nin,*)

!     Read in the problem size
Read (nin,*) n

Allocate (x(n),y(n))

!     Read in data
Read (nin,*)(x(i),y(i),i=1,n)

!     Display data
Write (nout,*) ' Case     Independent     Dependent'
Write (nout,*) 'number     variable       variable'
Write (nout,*)
Write (nout,99999)(i,x(i),y(i),i=1,n)
Write (nout,*)

!     Fit linear regression model
ifail = 0
Call g02caf(n,x,y,reslt,ifail)

!     Display results
Write (nout,99998) 'Mean of independent variable               = ',      &
reslt(1)
Write (nout,99998) 'Mean of   dependent variable               = ',      &
reslt(2)
Write (nout,99998) 'Standard deviation of independent variable = ',      &
reslt(3)
Write (nout,99998) 'Standard deviation of   dependent variable = ',      &
reslt(4)
Write (nout,99998) 'Correlation coefficient                    = ',      &
reslt(5)
Write (nout,*)
Write (nout,99998) 'Regression coefficient                     = ',      &
reslt(6)
Write (nout,99998) 'Standard error of coefficient              = ',      &
reslt(8)
Write (nout,99998) 't-value for coefficient                    = ',      &
reslt(10)
Write (nout,*)
Write (nout,99998) 'Regression constant                        = ',      &
reslt(7)
Write (nout,99998) 'Standard error of constant                 = ',      &
reslt(9)
Write (nout,99998) 't-value for constant                       = ',      &
reslt(11)
Write (nout,*)
Write (nout,*) 'Analysis of regression table :-'
Write (nout,*)
Write (nout,*)                                                           &
'      Source        Sum of squares  D.F.    Mean square     F-value'
Write (nout,*)
Write (nout,99997) 'Due to regression', reslt(12:15)
Write (nout,99997) 'About  regression', reslt(16:18)
Write (nout,99997) 'Total            ', reslt(19:20)

99999 Format (1X,I4,2F15.4)
99998 Format (1X,A,F8.4)
99997 Format (1X,A,F14.3,F8.0,2F14.3)
End Program g02cafe
```