Changed parameters as suggested by @certik

Author: Juan Fiol

src/tests/stats/test_mean.f90

@@ -5,8 +5,8 @@ program test_mean
 use stdlib_experimental_stats, only: mean
 implicit none
 
-real(sp), parameter :: sptol = 1.2e-06_sp
-real(dp), parameter :: dptol = 2.2e-15_dp
+real(sp), parameter :: sptol =10 * epsilon(1._sp)
+real(dp), parameter :: dptol =10 * epsilon(1._dp)
 
 real(sp) :: s1(3) = [1.0_sp, 2.0_sp, 3.0_sp]
 

src/tests/stats/test_mean_f03.f90

@@ -5,7 +5,7 @@ program test_mean
 use stdlib_experimental_stats, only: mean
 implicit none
 
-real(dp), parameter :: dptol = 2.2e-15_dp
+real(dp), parameter :: dptol =10 * epsilon(1._dp)
 
 real(dp), allocatable :: d(:, :)
 real(dp), allocatable :: d8(:, :, :, :, :, :, :, :)