Apparatus and Techniques Flashcards
1
Q
Independent Variable
A
The independent variable is the variable that was changed during an investigation.
2
Q
Dependent Variable
A
The dependent variable will be the results that have been collected throughout the investigation.
3
Q
Improving Experiments
A
Are there any obvious errors?
How have they collected the results?
Are the results accurate?
Look at the equipment, could this be improved?
4
Q
Increasing Reliability
A
- Repeating the investigation and calculating an average.
- Increase the number of samples taken.
- Increase the number of subjects used (living animals).
5
Q
Valid Meaning
A
Correct measurements have been taken to allow a valid conclusion to be drawn e.g. using dry mass
6
Q
Reliable Definition
A
Being able to trust the results e.g. repeating the experiment to eliminate wrong results
7
Q
Accurate Definition
A
Precision of measurements e.g. using 2 decimal places insteas of 1
