LIFE SCIENCES - GRADE 12 STRUCTURE, CONTROL & PROCESSES PRACTICAL - HYPOTHESIS TESTING: Investigating an individual's reaction time to a stimulus. Questions: 1. Formulate a hypothesis for your investigation. 2. Identify the: 2.1 independent variable dependent variable. 2.2 Length of ruler (3) (2) List TWO variables that should be kept constant in your investigation. (2) ( 3. 4. Describe TWO ways that your experimental design ensures the reliability of your results. (2) 5. Draw the completed results table in your answer sheet. (5) 6. Construct a bar graph using the average distance travelled in mm per individual. (7) T to determine which individual had the fastest r
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