Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
起こりうる誤った推論/平均・分散・標準偏差・自由度 / Possible false infe...
Search
Kenji Saito
PRO
December 06, 2024
Technology
0
80
起こりうる誤った推論/平均・分散・標準偏差・自由度 / Possible false inferences, means, variances, standard deviations and degrees of freedom
早稲田大学大学院経営管理研究科「企業データ分析」2024 冬の第3-4回で使用したスライドです。
Kenji Saito
PRO
December 06, 2024
Tweet
Share
More Decks by Kenji Saito
See All by Kenji Saito
続・インクルーシブな社会へ / Continuing Towards an Inclusive Society
ks91
PRO
0
14
AGI (人工一般知能) と創る新しく奇妙な社会 / New and Stranger Society built with AGI
ks91
PRO
0
63
回帰分析/大規模言語モデルと統計 / Regression Analysis, Large Language Models and Statistics
ks91
PRO
0
64
多重比較/相関分析 / Multiple Comparison and Correlation Analysis
ks91
PRO
0
63
アカデミーキャンプ 2025冬「考えるのは奴らだ」 / Academy Camp 2025 Winter - Live and Let Think DAY 3
ks91
PRO
0
60
アカデミーキャンプ 2025冬「考えるのは奴らだ」 / Academy Camp 2025 Winter - Live and Let Think DAY 2
ks91
PRO
0
47
アカデミーキャンプ 2025冬「考えるのは奴らだ」 / Academy Camp 2025 Winter - Live and Let Think DAY 1
ks91
PRO
1
73
インクルーシブな社会へ / Toward an Inclusive Society
ks91
PRO
0
21
P 値と有意差/分散分析 / P-value, Significant Difference and Analysis of Variance
ks91
PRO
0
70
Other Decks in Technology
See All in Technology
Developers Summit 2025 浅野卓也(13-B-7 LegalOn Technologies)
legalontechnologies
PRO
1
1.2k
30分でわかる『アジャイルデータモデリング』
hanon52_
9
2.8k
クラウドサービス事業者におけるOSS
tagomoris
3
940
プロダクトエンジニア 360°フィードバックを実施した話
hacomono
PRO
0
120
ハッキングの世界に迫る~攻撃者の思考で考えるセキュリティ~
nomizone
13
5.4k
現場で役立つAPIデザイン
nagix
35
12k
急成長する企業で作った、エンジニアが輝ける制度/ 20250214 Rinto Ikenoue
shift_evolve
3
1.8k
SA Night #2 FinatextのSA思想/SA Night #2 Finatext session
satoshiimai
1
150
ユーザーストーリーマッピングから始めるアジャイルチームと並走するQA / Starting QA with User Story Mapping
katawara
0
240
OpenID BizDay#17 KYC WG活動報告(法人) / 20250219-BizDay17-KYC-legalidentity
oidfj
0
280
君も受託系GISエンジニアにならないか
sudataka
2
450
ローカルLLMを活用したコード生成と、ローコード開発ツールへの応用
kazuhitoyokoi
0
130
Featured
See All Featured
Product Roadmaps are Hard
iamctodd
PRO
50
11k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.6k
The Straight Up "How To Draw Better" Workshop
denniskardys
232
140k
The Illustrated Children's Guide to Kubernetes
chrisshort
48
49k
KATA
mclloyd
29
14k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
9
490
Understanding Cognitive Biases in Performance Measurement
bluesmoon
27
1.6k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
100
18k
No one is an island. Learnings from fostering a developers community.
thoeni
21
3.1k
The Art of Programming - Codeland 2020
erikaheidi
53
13k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
47
5.2k
Why Our Code Smells
bkeepers
PRO
336
57k
Transcript
Corporate data analysis — generated by Stable Diffusion XL v1.0
2024 3-4 (WBS) 2024 3-4 — 2024-12-09 – p.1/32
https://speakerdeck.com/ks91/collections/corporate-data-analysis-2024-winter 2024 3-4 — 2024-12-09 – p.2/32
( ) 1 12 2 • 2 12 2 (B
A ) • 3 12 9 • 4 12 9 • 5 12 16 6 12 16 t 7 12 23 2 ( ) t 8 12 23 2 ( ) t 9 1 6 P 10 1 6 11 1 20 12 1 20 13 1 27 14 1 27 W-IOI 2024 3-4 — 2024-12-09 – p.3/32
( 20 25 ) 1 (20 ) • 2 R
( 55 ) • 3 (32 ) • 4 (14 ) • 5 ( Git) (22 ) • 6 ( ) (24 ) • 7 (1) (25 ) • 8 (2) (25 ) • 9 R ( ) (1) — Welch (17 ) • 10 R ( ) (2) — (21 ) • 11 R ( ) (1) — (15 ) • 12 R ( ) (2) — (19 ) • 13 GPT-4 (19 ) • 14 GPT-4 (29 ) • 15 ( ) LaTeX Overleaf (40 ) • 8 (12/16 ) / (2 ) OK / 2024 3-4 — 2024-12-09 – p.4/32
(B A ) 1 ( ) 2 (Wilcoxon-Mann-Whitney ) 2024
3-4 — 2024-12-09 – p.5/32
3 1 ( ) 2 ( ) 1 2 4
σ2 σ s2 s df 2024 3-4 — 2024-12-09 – p.6/32
2024 3-4 — 2024-12-09 – p.7/32
1. (1) (2) 2024 12 5 ( ) 23:59 JST
( ) Waseda Moodle (Q & A ) 2024 3-4 — 2024-12-09 – p.8/32
. . . . . . 17 17 (12/6( )
) ( ) . . . 5 ( . . .) ( ) . . . 5 ( ) . . . 6 (2 ) R ^^; ( ) ( ) ( ) (1) 2024 3-4 — 2024-12-09 – p.9/32
(1) sqrt ( ) ^2 ( ) ( 3 )
(2) ( ) (3) 1 2 p (p WMW ) 16 ( ) 6 50% (← be ambitious!) 5% (← 2 ) 2024 3-4 — 2024-12-09 – p.10/32
( 50% ) 0 5 10 15 0.00 0.05 0.10
0.15 0.20 0.25 ᳨ฟᅇᩘ ☜⋡ 6 . . . 2024 3-4 — 2024-12-09 – p.11/32
H ⇒ ( : ) ( : ) 2024 3-4
— 2024-12-09 – p.12/32
I ( ) ex (P ) ( 5% or 1%
) ⇒ ⇒ ⇒ ⇒ ( ) 2024 3-4 — 2024-12-09 – p.13/32
Git Git ( GPL) GitHub Git ( ) RStudio pull
( ) Git (OS ) Linux : ( OK) macOS : Xcode (Apple ; App Store ) Windows : https://gitforwindows.org OK https://github.com/ks91/cda-demo ( ) 2024 3-4 — 2024-12-09 – p.14/32
U R ⇒ ( ) ( ) ( ) (
) : https://qiita.com/morayl/items/7d3a06d79fe2ab542b39 2024 3-4 — 2024-12-09 – p.15/32
H R WBS ⇒ R R 2024 3-4 — 2024-12-09
– p.16/32
R ⇒ D R ( ) × * ÷ /
xy x^y ( ) √ x sqrt(x) (function; ) ( 1 , 2 ,. . .) sqrt(9) + sqrt(16) ( ) <- ( ) ( ) x <- x + 1 x 1 ( ) 2024 3-4 — 2024-12-09 – p.17/32
R ( ) ⇒ D R " " T (true;
) F (false; ) c( 1 , 2 , . . .) ( ) 10 x x[1:3] 1 3 ( 1:100 1 100 ) a.b . . . . R R Source “ D.R” . . . ra <- sum(df[df$group == " ", "rank"]) ⇒ df group rank ra ( == ) 2024 3-4 — 2024-12-09 – p.18/32
“ D.R” ‘sum(. . .)’ # sum(df[df$group == " ",
"rank"]) ... <- 0 i <- 1 # while (i df ) { # if ((df i group ) == " ") { <- + (df i rank ) } i <- i + 1 } 2024 3-4 — 2024-12-09 – p.19/32
O R web ⇒ ( ) https://okumuralab.org/∼okumura/stat/ L A TEX(
/ ) ( ) R R (RStudio) ( ) 2024 3-4 — 2024-12-09 – p.20/32
N AI GPT ⇒ GPT Python R R ( (
) ) 2024 3-4 — 2024-12-09 – p.21/32
H ⇒ 2024 3-4 — 2024-12-09 – p.22/32
3 1 ( ) 2 ( ) 1 2 2024
3-4 — 2024-12-09 – p.23/32
100% 2 1 ( ( ) ) 2 ( (
) ) 2 1 1 α (α ) ( ) 2 β (β ) α n p 1 − β (power) 2024 3-4 — 2024-12-09 – p.24/32
3 “ .R” 3 bidist(n, p) : binull(n, p) :
5% bidistg(n, p0, p) : p0 p ( n = 20) p = 0.6 p = 0.2 p = 0.4 p = 0.8 p = 0.7 2024 3-4 — 2024-12-09 – p.25/32
0 5 10 15 20 0.00 0.05 0.10 0.15 0.20
᳨ฟᅇᩘ ☜⋡ 0 5 10 15 20 0.00 0.05 0.10 0.15 0.20 p = 0.2 2024 3-4 — 2024-12-09 – p.26/32
4 σ2 σ s2 s df 2024 3-4 — 2024-12-09
– p.27/32
(parameter; ) ( ) µ, σ2, σ (statistic) ( )
x, s2, s (degree of freedom) ( ) df = n− k 2024 3-4 — 2024-12-09 – p.28/32
E ( p.106) 8 “ E.R” R ‘var(. . .)’,
‘sd(. . .)’ x sqrt(sd(x)^2*(length(x) - 1)/length(x)) 2024 3-4 — 2024-12-09 – p.29/32
2024 3-4 — 2024-12-09 – p.30/32
2. 1 2 (1) 1 2 (2) 2023 12 12
( ) 23:59 JST ( ) Waseda Moodle (Q & A ) (1) Discord 2024 3-4 — 2024-12-09 – p.31/32
2024 3-4 — 2024-12-09 – p.32/32