Standard Deviation

Question 1

What is Standard Deviation?

Answer 1

Standard Deviation is a measure of How spread out all you REPEATS are from your mean

Question 2

What are the advantage of using Standard Deviation instead of the range?
[3reasons]

Answer 2

1.Range is only difference between Highest and Lowest
2.SD reduces effect of anomalies. Range includes Anomalies
3.SD used to indicate whether a difference between results is significant.

Question 3

What would Knowing Standard Deviation be more useful for a conclusion?

Answer 3

If you add/minus standard deviation from mean - NO OVERLAP indicates likely to be a Significant Difference.

If you add/minus standard deviation from mean -YES OVERLAP likely NOT to be a significant difference

Question 4

What is a key word to remember in Standard deviation?

Answer 4

OVERLAP