The formula to calculate the Z factor is:
\[ \text{Zf} = 1 - \left[ \frac{3 \times (\sigma_p + \sigma_n)}{|\mu_p - \mu_n|} \right] \]
Where:
Let's consider an example:
Using the formula to calculate the Z factor:
\[ \text{Zf} = 1 - \left[ \frac{3 \times (5 + 4)}{|100 - 80|} \right] = 1 - \left[ \frac{27}{20} \right] = 1 - 1.35 = -0.35 \]
This demonstrates that the Z factor for these values is -0.35. ✅