Utilizes regression models (like Ordinary Least Squares or Deming regression) and scatter plots to visualize the relationship between methods.

Specific protocols are followed to identify and handle data points that fall far outside the expected range.

Using "split patient samples" to test both the candidate method and a comparative method simultaneously.

If it was for clinical lab validation , I can provide more details on bias estimation. If it was for environmental compliance , I can explain opacity testing procedures. Method 9 - Visual Opacity | US EPA

The most common "EP9" is the guideline for comparing medical laboratory methods. It is essential for ensuring that new diagnostic tests provide results consistent with existing ones.

Detailed field manuals are provided by the US EPA Air Emission Measurement Center . 3. Media and Entertainment (Episode 9)

You can find technical documentation or order the standard via the CLSI official site . 2. Environmental Testing: EPA Method 9