Across
- 3. Size - The number of people specifically chosen for an experiment.
- 5. - The variable that you measure or observe.
- 8. - Data that is measured with numbers.
- 10. receptors - Nerve endings that respond to tactile stimuli.
- 11. - an explanation based on facts, but cannot be proven.
- 12. - a type of group in an experiment that rules out any bias.
Down
- 1. - The variable that you change in the experiment.
- 2. - Something that can be changed or controlled.
- 4. - The type of plan that tests a hypothesis.
- 6. - Type of system that contains the brain, spinal cord and retina.
- 7. - Data that is observed and described.
- 9. - the group that receives the experimental variables