Choisir le bon test : ressources humaines

En ressources humaines, il est essentiel de comprendre les relations entre différentes variables pouvant influencer la satisfaction ou le turnover des employés. Imaginez qu’un service RH souhaite analyser l’association entre le département dans lequel travaillent les employés et leur participation à un nouveau programme de bien-être au travail. L’équipe RH a compilé ces données sur les deux dernières années et vous demande s’il existe une association significative entre le département d’un employé et son inscription au programme de bien-être.

Les données sont disponibles dans le DataFrame hr_wellness. pandas as pd, numpy as np, et les fonctions suivantes ont été chargés :

from scipy.stats import ttest_ind
from scipy.stats import f_oneway
from scipy.stats import chi2_contingency

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<cours>Conception expérimentale en Python</cours>

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<cours>Conception expérimentale en Python</cours>

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Building knowledge in experimental design allows you to test hypotheses with best-practice analytical tools and quantify the risk of your work. You’ll begin your journey by setting the foundations of what experimental design is and different experimental design setups such as blocking and stratification. You’ll then learn and apply visual and analytical tests for normality in experimental data.

Exercise 1: Setting up experiments Exercise 2: Non-random assignment of subjects Exercise 3: Random assignment of subjects Exercise 4: Experimental data setup Exercise 5: Blocking experimental data Exercise 6: Stratifying an experiment Exercise 7: Which was stratified?Exercise 8: Normal data Exercise 9: Visual normality in an agricultural experiment Exercise 10: Analytical normality in an agricultural experiment

You'll delve into sophisticated experimental design techniques, focusing on factorial designs, randomized block designs, and covariate adjustments. These methodologies are instrumental in enhancing the accuracy, efficiency, and interpretability of experimental results. Through a combination of theoretical insights and practical applications, you'll acquire the skills needed to design, implement, and analyze complex experiments in various fields of research.

Exercise 1: Factorial designs: principles and applications Exercise 2: Understanding marketing campaign effectiveness Exercise 3: Heatmap of campaign interactions Exercise 4: Factorial designs and randomized block designs Exercise 5: Randomized block design: controlling variance Exercise 6: Implementing a randomized block design Exercise 7: Visualizing productivity within blocks by incentive Exercise 8: ANOVA within blocks of employees Exercise 9: Covariate adjustment in experimental design Exercise 10: Importance of covariates Exercise 11: Covariate adjustment with chick growth

Master statistical tests like t-tests, ANOVA, and Chi-Square, and dive deep into post-hoc analyses and power analysis essentials. Learn to select the right test, interpret p-values and errors, and skillfully conduct power analysis to determine sample and effect sizes, all while leveraging Python's powerful libraries to bring your data insights to life.

Exercise 1: Choisir le bon test statistique Exercise 2: Choisir le bon test : pétrochimie Exercise 3: Choisir le bon test : ressources humaines

Exercice actuel

Exercise 4: Choisir le bon test : finance Exercise 5: Analyse post-hoc après une ANOVA Exercise 6: ANOVA sur les traitements de l’anxiété Exercise 7: Appliquer le test HSD de Tukey Exercise 8: Appliquer la correction de Bonferroni Exercise 9: Valeurs p, alpha et erreurs Exercise 10: Analyser la durabilité des jouets Exercise 11: Visualiser les différences de durabilité Exercise 12: Rôle des seuils de significativité Exercise 13: Analyse de puissance : taille d’échantillon et taille d’effet Exercise 14: Objectif de la taille d'effet Exercise 15: Estimer la taille d’échantillon nécessaire pour l’étude énergétique

Hop into the complexities of experimental data analysis. Learn to synthesize insights using pandas, address data issues like heteroscedasticity with scipy.stats, and apply nonparametric tests like Mann-Whitney U. Learn additional techniques for transforming, visualizing, and interpreting complex data, enhancing your ability to conduct robust analyses in various experimental settings.

Exercise 1: Synthesizing insights from complex experiments Exercise 2: Visualizing loan approval yield Exercise 3: Exploring customer satisfaction Exercise 4: Effectively communicating experimental data Exercise 5: Addressing complexities in experimental data Exercise 6: Check for heteroscedasticity in shelf life Exercise 7: Exploring and transforming shelf life data Exercise 8: Applying nonparametric tests in experimental analysis Exercise 9: Visualizing and testing preservation methods Exercise 10: Further analyzing food preservation techniques Exercise 11: Congratulations!