Month

Equation

F-Ratio

P-Value

January

Y = 337.476 − 0.148x

0.120

0.729

February

Y = 329.801 − 0.151x

0.312

0.578

March

Y = −200.929 + 0.145x

0.077

0.782

April

Y = 853.925 − 0.381x

0.481

0.491

May

Y = 787.946 − 0.374x

1.676

0.201

June

Y = 244.554 − 0.121x

3.979

0.051

July

Y = 254.688 − 0.127x

5.672

0.021

August

Y = −6.734 + 0.006x

0.012

0.914

September

Y = 211.626 − 0.104x

1.573

0.215

October

Y = 538.203 − 0.254x

0.709

0.403

November

Y = 1399.651 − 0.646x

1.156

0.287

December

Y = −123.509 + 0.119x

0.066

0.798