# Laboratory Experiments in Information Retrieval: Sample Sizes, Effect Sizes, and Statistical Power (Springer, 2018) by Tetsuya Sakai

Last updated: 6th May, 2019

Jerome White’s Python library based on my book is here!

## ERRATA

2019/05/06 Thanks to Jerome White for pointing this out.
p.15
Proof of Corollary 6
“Since $\bar{x}{1 \bullet}$ and $\bar{x}{1 \bullet}$ must also be independent”
->
“Since $\bar{x}{1 \bullet}$ and $\bar{x}{2 \bullet}$ must also be independent”

2019/05/06 Thanks to Jerome White for pointing this out.
p.21
Corollary 14
“approximating
->
“approximation

2019/05/06 Thanks to Jerome White for pointing this out.
p.35
Figure 2.3 Row 24 Column D should be V_d instead of V_t, like this.

2019/05/06 Thanks to Jerome White for pointing this out.
p.61
Section 4.2, second para
“rejecting a correct hull hypothesis”
->
“rejecting a correct null hypothesis”

2019/05/06 Thanks to Jerome White for pointing this out.
p.72
“Since $\bar{x}{3\bullet}-\bar{x}{1\bullet}=-0.0383845$”
->
“Since $\bar{x}{3\bullet}-\bar{x}{1\bullet}=-0.083845$”

2019/03/09 Thanks to Jerome White for pointing this out.
p.78
“the difference between Systems 1 and 3 is p=0.4996″
->
“the difference between Systems 1 and 2 is p=0.4996″

2019/03/09
p.79
Fig 4.14 should be replaced with this one.
(In the current edition, Fig 4.14 is the same as Fig 4.11 on page 76.)