TD_LINEAR_REGR ( SERIES_SPEC, FUNC_PARAMS ( [ VARIABLES_COUNT ({ 2 | 3 }) ] , WEIGHTS ({ 0 | 1 }) , FORMULA (formula), ALGORITHM ({ 'QR' | 'PSI' }) [, COEFF_STATS ({ 0 | 1 }) , CONF_INT_LEVEL (conf_int_level) } ] [, MODEL_STATS ({ 0 | 1 }) ] [, RESIDUALS ({ 0 | 1 }) ] ) );