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6. Genetic differences AND environmental influences are causes of variation.
7. What best describes a normal distribution curve?
- Bell shaped
- Straight line with steep gradient
- Curved line with steep gradient
8. 1 standard deviation on a normal distribution curve is...
9. 2 standard deviation of a normal distribution curve is...
10. Variation due to genetic factors is categoric
11. Variation due to environmental factors is...
12. What helps to avoid sampling bias?
- Knowing the age/sex of individuals in sample
- Random sampling
- Larger sample size
13. What minimizes the effect of chance on sampling?
- Larger sample size
- Smaller sample size