Statistics

Question 0

Define standard error

Answer 0

The estimate of the standard deviation

Question 1

Define standard deviation

Answer 1

The measure of the spread of values

Question 2

What does spearmans rank represent

Answer 2

Correlation

Question 3

How is index of diversity calculated

Answer 3

Using an equation that takes into account different population sizes

Question 4

Index of diversity takes into account….

Answer 4

The number of species and the number of individuals within the species

Question 5

What is used to measure diversity

Answer 5

Index of diversity

Question 6

What is mark-release-recapture used for

Answer 6

To estimate a population

Question 7

Steps in carrying out mark-release-recapture

Answer 7

Catch animals using an appropriate technique and count them
Mark them in harmless way
Release
Leave time
Catch another sample and count them
Carry out maths to estimate total population size

Question 8

Assumptions to take into account when carrying out mark-release-recapture

Answer 8

The mark should not affect animals chance of survival
Mark should not affect animals chance of being caught
The animals should be left long enough to mix with the population
Changes in population size due to births, deaths and migration are small during the period of study