Sample interview questions: How do you approach designing and implementing controls in your experiments to ensure the validity of your results?
Sample answer:
Approaching Experimental Control Design and Implementation for Valid Results
- Establish a Clear Hypothesis and Objective: Define the specific question or hypothesis being addressed to guide the design of appropriate controls.
- Identify Potential Sources of Variability: Consider all factors that could influence the experimental outcome, including environmental conditions, equipment calibration, and sample handling protocols.
- Establish Negative and Positive Controls: Include controls that represent conditions where the expected response is known (negative controls) and where the response should be positive (positive controls).
- Randomize Samples and Treatments: Randomize the assignment of samples to treatments or experimental conditions to minimize bias and ensure statistical independence.
- Blinding Experimenters: Where possible, blind experimenters to the treatment or experimental condition to reduce subjective bias in data collection and interpretation.
- Replicate Experiments and… Read full answer
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