Join points with straight lines (ruled) unless a "best-fit" line is specifically requested. Circle outliers if they are clearly anomalous. ⚠️ Identifying Variables and Errors You will be asked to critique your experiment. Be specific.

Be ready to distinguish between systematic errors (instrumental) and random errors (human/procedural). Common improvements include using more precise equipment (e.g., a colorimeter) or increasing the number of intermediate concentrations. Recommended Revision Resources

Three weeks later, the results arrived.

Print this list. If you can't do these, go practice.

Biology 9700 practical paper (Paper 3) assesses experimental skills and investigations through two main types of tasks: laboratory experiments and microscopic observations.

Accuracy in visual representation and data recording is critical for the practical exam.

Examiners mark you on: