return the coefficient a0 . concode_field_sep double sumXX concode_elem_sep float a1 concode_elem_sep double sumXY concode_elem_sep double sumY concode_elem_sep boolean coefsValid concode_elem_sep double sumX concode_elem_sep int n concode_elem_sep float a0 concode_field_sep double getSumY concode_elem_sep float at concode_elem_sep void validateCoefficients concode_elem_sep double getSumX concode_elem_sep void reset concode_elem_sep int getDataPointCount concode_elem_sep double getSumXX concode_elem_sep void addDataPoint concode_elem_sep float getA1 concode_elem_sep double getSumXY
float function ( ) { validateCoefficients ( ) ; return a0 ; }