calculates confidence intervals and t-test based p-values for regression coefficients based on jack-knifing procedure
regcoeffs.getStat(coeffs.values, ci.coeffs)regression coefficients array for a model
array with regression coefficients for calculation of condifence intervals
a list with statistics ($ci - array with confidence intervals,
$p.values - array with p-values, $t.values - array with t-values)