Topic 1: Standard Deviation

Question 1

What is Standard Deviation a measure of?

Answer 1

Standard Deviation is a measure of how spread out your repeats are from the mean

Question 2

What are the advantages of using SD over the range?

Answer 2

1. SD shows the spread of data around the mean while the range is only the difference between the highest and lowest value
2. SD reduces the effect of anomalies, whereas the range includes anomalies
3. SD can indicate whether the difference between results is significant