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rsalaza4/WECO_control_limits.py

Created May 10, 2022 16:39
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WECO_control_limits.py
# Get control limits
df_grouped['x_bar_bar'] = statistics.mean(df_grouped['x_bar'])
df_grouped['UCL'] = statistics.mean(df_grouped['x_bar'])+(0.577*statistics.mean(df_grouped['R']))
df_grouped['+2s'] = (df_grouped['UCL']-df_grouped['x_bar_bar'])/3*2+df_grouped['x_bar_bar']
df_grouped['+1s'] = (df_grouped['UCL']-df_grouped['x_bar_bar'])/3*1+df_grouped['x_bar_bar']
df_grouped['-1s'] = df_grouped['x_bar_bar']-(df_grouped['UCL']-df_grouped['x_bar_bar'])/3*1
df_grouped['-2s'] = df_grouped['x_bar_bar']- (df_grouped['UCL']-df_grouped['x_bar_bar'])/3*2
df_grouped['LCL'] = statistics.mean(df_grouped['x_bar'])-(0.577*statistics.mean(df_grouped['R']))
df_grouped.head()
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