Investigating Diversity

Question 1

Explain how data should be collected when investigating variation within a species quantitatively.

Answer 1

1. Take a random sample to avoid bias. You can do this by using a grid to divide the area into squares and using a random number generator to obtain random coordinates.
2. Use the same method of measurement each time.
3. Use a large sample size so the data will be representative of the means.
4. Calaculate a mean.
5. Use a method that is ethical. Make sure it does not harm the organism.

Question 2

Explain how data should be collected when investigating variation within a species quantitatively.

Answer 2

1. Calculate a mean to allow comparison.
2. Calculate the standard deviation and use it to see whether the two sets of data are significant.
3. Do a statistical test and use it to see whether the two sets of data are significant.