A2 Past paper questions to learn

Question 1

In terms of statistics, compare and contrast the terms standard deviation and range

Answer 1

-Both standard deviation and range give an indication of the variability of the data
-Standard deviation indicates the spread either side of the mean/ traps 60% of the values either side of the mean
-The range is the difference between the highest and lowest value

Question 2

Explain why standard deviation is more useful than range

Answer 2

-range can be affected by an anomalous outlier
-range provides no information about the data in between the two values