[methods] clean up statistics ref

diff --git a/methods/statistics.pdf b/methods/statistics.pdf
index 0929ba09c6bc5f4402728543f81cac3f1a88f066..7a81019f20b07eedb87072e084bf7bf8305bb088 100644 (file)
Binary files a/methods/statistics.pdf and b/methods/statistics.pdf differ