why stouffer's method of combining probabilities is based on the sum of the variances equal to the sum of the variances? why is it necessary for steruffer to multiply square root of k? which formula divides by square root of the sum of variances? why do you divide by square root instead of by square root? what is the square root for stouffer z why is the stouffer formula divided by the square root of k? why is stouffer formula used in probability when do you divide z by square why use square root k for stouffer why is stouffer's formula used in calculating a probability? why is stouffer z divided which formula divides by the square root of k in calculating z why divide by square root does stouffer's formula divide by square root what does stouffer's formula do z why is stouffer's algorithm derived from a __________? what is the square root of k when calculating probability, the formula is based on a why do stouffer's formulas divide by k stouffer square root