Research Article

Effect of Ap-Index of Geomagnetic Activity on S&P 500 Stock Market Return

Table 2

Summary of Statistics.

ā€‰MeanStd.DevMaximumMinimumObservations

10.765.2335.002.00240
1414.73417.952673.61735.09240
1452.19413.332694.97832.98240
1360.93414.202605.52666.79240
5.903.2116.201.15240
22.6320.49109.154.2240