2.7 How Valid is the Data? Flashcards
1
Q
Why can investigations about the distribution of organisms in the environment be very difficult?
A
Because they are often done over a long period of time and not all variables can be controlled
2
Q
What is a valid investigation?
A
Where all the possible variables are controlled
3
Q
What is repeatable?
A
If the original experimenter does the experiment again with the same method and equipment and gets the same results
4
Q
What is reproducible?
A
If the investigation is repeated by another person or by using different equipment and they achieve the same results
5
Q
What may happen if the sample size is too small?
A
The data may not be representative
