[spec] rm arrows on asymptotes

diff --git a/methods/statistics.pdf b/methods/statistics.pdf
index bccb7d23b36684c039b60729dde560a93c1c6a95..0929ba09c6bc5f4402728543f81cac3f1a88f066 100644 (file)
Binary files a/methods/statistics.pdf and b/methods/statistics.pdf differ