2.7 How Valid is the Data? Flashcards
0
Q
When is a measurement repeatable?
A
When the original experimenter repeats the investigation using the same method and equipment and obtains the same results
1
Q
Why investigation about the distribution of organisms in their environment difficult? (2)
A
May need to be done over a long period of time
Not all variables can be controlled
2
Q
When is a measurement reproducible?
A
When the investigation is repeated by another person or using different equipment/ techniques and the same results are obtained
3
Q
Why are sample sizes important?
A
Is the sample is too small it may not be representative
