Table 2.

Kruskal–Wallis test results.

Data: happiness by Age	Kruskal–Wallis chi-squared = 86.516, df = 6, p-value <2.2e-16
data: happiness by Occupation	Kruskal–Wallis chi-squared = 448, df = 2, p-value <2.2e-16
data: happiness by Gender	Kruskal–Wallis chi-squared = 91.552, df = 1, p-value <2.2e-16
data: happiness by Graduate	Kruskal–Wallis chi-squared = 6.7651, df = 4, p-value = 0.1488