Statistical Methods In Analytical Chemistry (ch... -
Expressed as a percentage, this allows you to compare the precision of different methods regardless of the units. 2. Error Analysis: Accuracy vs. Precision
Errors that have a definite cause (e.g., an uncalibrated pipette). These affect accuracy —how close you are to the true value. Statistical Methods in Analytical Chemistry (Ch...
Most analytical instruments produce a signal (like absorbance) that must be converted to concentration. Expressed as a percentage, this allows you to
): Indicates how well your data fits that linear model. In analytical work, we usually look for 5. Limits of the Method Statistics define the "floor" of what an instrument can do: Precision Errors that have a definite cause (e
Before complex modeling, you have to understand the "shape" of your results. Mean (
The "outlier" test. It helps you statistically justify discarding a data point that looks wildly different from the rest. 4. Calibration and Linear Regression