Investigating Biodiversity

Question 1

What is Sampling?

Answer 1

taking measurements from a limited number of individual organisms from a larger population

Question 2

What is Sampling used for?

Answer 2

estimate the number of organisms or particular characteristics of those organisms without cutting them all

Question 3

How to do Random Sampling and how is it an advantage?

Answer 3

Using grid co-ordinate and a random number generator to select the coordinates you sample helps to make sure your samples are separated out at random in the area you are sampling from
Reduces bias

Question 4

What does a large sample ensure?

Answer 4

sample is representative and reduce the probability that any patterns are due to ‘chance’

Question 5

What is Standard Deviation?

Answer 5

tell you the variation of values in a sample about the mean
High standard deviation= lots of variation in the sample