FinancialData — 当前和历史的股票、基金、指数、货币等数据

"Price"  ▪ "CumulativeReturn"  ▪ "Volatility50Day"  ▪ "MarketCap"  ▪ "PERatio"  ▪ "EBITDA"  ▪ "DividendYield"  ▪ "SICCode"  ▪

CountryData — 所有国家的社会经济数据和时间序列

"GDP"  ▪ "ExportValue"  ▪ "FixedInvestment"  ▪ "ElectricityProduction"  ▪ "OilReserves"  ▪

"CurrencyCode"  ▪ "CurrentUnit"  ▪ "ExchangeRate"  ▪

DateListPlot — 画时间序列图

MovingAverage  ▪ ExponentialMovingAverage  ▪ LinearModelFit