在 4 个单独的图上绘制每个评级的组平均值答案

【问题标题】：Plot group averages for each rating on 4 separate plots在 4 个单独的图上绘制每个评级的组平均值
【发布时间】：2021-03-03 13:23:33
【问题描述】：

我有 4 个组（研究、销售、manu、hr），每个组有 2 个类别（0 和 1）。我正在尝试绘制列表ratings 中特征中每个组的平均分数。给我方法的代码看起来像这样（depts = ['research', 'sales', 'manu', 'hr']:

ratings = ['JobSatisfaction', 'PerformanceRating', 'EnvironmentSatisfaction', 'RelationshipSatisfaction']


for i in depts:
    for x in ratings:
        print(group_data.groupby([i]).mean()[x])

这会导致这个输出：

research
0.0    2.700000
1.0    2.773973
Name: JobSatisfaction, dtype: float64
research
0.0    3.100000
1.0    3.167808
Name: PerformanceRating, dtype: float64
research
0.0    2.500000
1.0    2.726027
Name: EnvironmentSatisfaction, dtype: float64
research
0.0    2.687500
1.0    2.705479
Name: RelationshipSatisfaction, dtype: float64
sales
0.0    2.754601
1.0    2.734940
Name: JobSatisfaction, dtype: float64
sales
0.0    3.125767
1.0    3.144578
Name: PerformanceRating, dtype: float64
sales
0.0    2.671779
1.0    2.734940
Name: EnvironmentSatisfaction, dtype: float64
sales
0.0    2.702454
1.0    2.602410
Name: RelationshipSatisfaction, dtype: float64
manu
0.0    2.682759
1.0    2.723077
Name: JobSatisfaction, dtype: float64
manu
0.0    3.186207
1.0    3.158974
Name: PerformanceRating, dtype: float64
manu
0.0    2.917241
1.0    2.735897
Name: EnvironmentSatisfaction, dtype: float64
manu
0.0    2.724138
1.0    2.689744
Name: RelationshipSatisfaction, dtype: float64
hr
0.0    2.705882
1.0    2.557692
Name: JobSatisfaction, dtype: float64
hr
0.0    3.196078
1.0    3.134615
Name: PerformanceRating, dtype: float64
hr
0.0    2.764706
1.0    2.596154
Name: EnvironmentSatisfaction, dtype: float64
hr
0.0    2.813725
1.0    2.961538
Name: RelationshipSatisfaction, dtype: float64

我的问题是如何将每个评级['JobSatisfaction', 'PerformanceRating', 'EnvironmentSatisfaction', 'RelationshipSatisfaction']的这些组均值（研究、销售、manu、hr）绘制到 4 个不同的条形图上，以便可视化和比较每个组之间的差异？

我的数据来自 IBM HR 数据集：https://www.kaggle.com/pavansubhasht/ibm-hr-analytics-attrition-dataset

【问题讨论】：

标签： python pandas matplotlib pandas-groupby seaborn

【解决方案1】：

您可以使用 seaborn 的 sns.barplot，并且由于您的 y 变量具有可比性，因此可以按颜色和相同的 y 轴进行分隔：

import statsmodels.api as sm
import pandas as pd
import seaborn as sns
import matplotlib.pyplot as plt

df = pd.read_csv("WA_Fn-UseC_-HR-Employee-Attrition.csv")

ratings = ['JobSatisfaction', 'PerformanceRating', 'EnvironmentSatisfaction', 'RelationshipSatisfaction']

sns.barplot(data = df[['Department'] + ratings].melt(id_vars='Department'),
            x = 'variable',y='value',hue='Department')
plt.xticks(rotation=45)

【讨论】：