Answer:
14
Explanation:
Range means the difference between the highest and lowest values in a set.
According to this question,
31, 29, 33, 37, 43, 38, 33, 40
Highest value = 43
Lowest value = 29
Now lets find the range of this data set.
Range = 43 - 29
= 14
Hope this helps you.
Let me know if you have any other questions :-)