# Program for showing the use of one-way ANOVA test on existing dataset

# Visual display of the different departments

plt.figure(1, figsize=(12,8))

sns.violinplot(x='department', y='post_trg', data=training).set_title('Training Score of different departments')

# Applying ANOVA on the value of training score according to department

mktg = training[training['department']=='Marketing']['post_trg']

finance = training[training['department']=='Finance']['post_trg']

hr = training[training['department']=='Human Resource']['post_trg']

op = training[training['department']=='Operations']['post_trg']

print("ANOVA test:", stats.f_oneway(mktg,finance,hr,op))