Multistep-Ahead Stock Price Forecasting Based on Secondary Decomposition Technique and Extreme Learning Machine Optimized by the Differential Evolution Algorithm

Table 1

Descriptive statistical analysis of price series of the S&P 500 index and the HS300 index samples.

The time series	Max	Min	Ave	Med	Std
S&P 500 index	3240	1742	2364	2264	380.4
HS300 index	5354	2087	3427	3463	620.4