Tetrachoric

Vasicek

Bits

Precision

A

B

n

A

B

n

53

1.11e−16

6.98e−17

8.65e−17

46

6.98e−17

3.10e−17

47

64

5.42e−20

6.89e−21

2.26e−20

57

6.89e−21

2.26e−20

57

128

2.94e−39

5.47e−40

5.89e−41

119

5.47e−40

5.89e−41

120

256

8.64e−78

6.29e−78

3.33e−78

246

6.29e−78

3.33e−78

246

512

7.46e−155

3.65e−156

1.37e−155

500

4.09e−155

1.37e−155

501

1024

5.56e−309

5.04e−309

2.41e−309

1011

2.25e−309

5.19e−309

1011