Please help!
Error in auto.arima(tlkm_arimax[, "tlkm_return"], xreg = tlkm_arimax[, :
xreg should be a numeric matrix or a numeric vector
for this query
Fit the model
(fit <- auto.arima(tlkm_arimax[, "tlkm_return"],
xreg = tlkm_arimax[, "nasdaq_return"]))