Back to quiz

6. Genetic differences AND environmental influences are causes of variation.

  • True
  • False

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...

  • 70%
  • 95%
  • 68%
  • 66%
  • 82%

9. 2 standard deviation of a normal distribution curve is...

  • 82%
  • 70%
  • 95%
  • 68%
  • 66%

10. Variation due to genetic factors is categoric

  • True
  • False

11. Variation due to environmental factors is...

  • Continuous
  • Categoric

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