Testing against Ruby 1.8.6

Building test cases of 1-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 4.021 s
Set 1 std dev: 0.005
Set 2 mean: 3.991 s
Set 2 std dev: 0.006
p.value: 1.0825088224469e-05
W: 100.0
The difference (-0.7%) IS statistically significant.

Building test cases of 100-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 4.394 s
Set 1 std dev: 0.007
Set 2 mean: 4.375 s
Set 2 std dev: 0.005
p.value: 2.16501764489381e-05
W: 99.0
The difference (-0.4%) IS statistically significant.

Building test cases of 200-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 4.757 s
Set 1 std dev: 0.009
Set 2 mean: 4.742 s
Set 2 std dev: 0.007
p.value: 0.000725280911039425
W: 92.0
The difference (-0.3%) IS statistically significant.

Building test cases of 300-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 5.111 s
Set 1 std dev: 0.004
Set 2 mean: 5.104 s
Set 2 std dev: 0.006
p.value: 0.00893069778518695
W: 84.0
The difference (-0.1%) IS statistically significant.

Building test cases of 400-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 5.453 s
Set 1 std dev: 0.004
Set 2 mean: 5.441 s
Set 2 std dev: 0.008
p.value: 0.000129901058693628
W: 96.0
The difference (-0.2%) IS statistically significant.

Building test cases of 500-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 5.877 s
Set 1 std dev: 0.003
Set 2 mean: 5.856 s
Set 2 std dev: 0.006
p.value: 1.0825088224469e-05
W: 100.0
The difference (-0.4%) IS statistically significant.

Building test cases of 600-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 6.203 s
Set 1 std dev: 0.006
Set 2 mean: 6.199 s
Set 2 std dev: 0.006
p.value: 0.105122431747819
W: 72.0
The difference (-0.1%) IS NOT statistically significant.

Building test cases of 700-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 6.554 s
Set 1 std dev: 0.004
Set 2 mean: 6.544 s
Set 2 std dev: 0.004
p.value: 7.57756175712832e-05
W: 97.0
The difference (-0.1%) IS statistically significant.

Building test cases of 800-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 6.876 s
Set 1 std dev: 0.007
Set 2 mean: 6.887 s
Set 2 std dev: 0.004
p.value: 7.57756175712832e-05
W: 3.0
The difference (+0.2%) IS statistically significant.

Building test cases of 900-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 7.186 s
Set 1 std dev: 0.007
Set 2 mean: 7.212 s
Set 2 std dev: 0.005
p.value: 1.0825088224469e-05
W: 0.0
The difference (+0.4%) IS statistically significant.

Building test cases of 1000-byte initialized String object constructors...
Testing 10 passes of 200000 iterations for literal (Set 1) versus processed (Set 2) String object constructors
..........
Set 1 mean: 7.532 s
Set 1 std dev: 0.005
Set 2 mean: 7.568 s
Set 2 std dev: 0.003
p.value: 1.0825088224469e-05
W: 0.0
The difference (+0.5%) IS statistically significant.