Raingauge

Test

Saint-Louis

Bakel

Dakar

Kaolack

Ziguinchor

Tambacounda

Kendall

Kendall’s $\tau$

0.30

0.33

0.24

0.22

0.19

0.10

Z Statistic

2.78

3.10

2.18

2.10

1.73

0.94

H₀

Rejected

Rejected

Rejected

Rejected

Accepted

Accepted

Conclusion

Correlated

Correlated

Correlated

Correlated

Independent

Independent

Spearman

Spearman’s $\rho$

−0.436

−0.438

−0.323

−0.321

−0.239

−1.151

Z Statistic

−3.027

−3.042

−2.135

−2.119

−1.540

−0.953

Spearman

H₀

Rejected

Rejected

Rejected

Rejected

Accepted

Accepted

Conclusion

Correlated

Correlated

Correlated

Correlated

Independent

Independent