Answer and Explanation:
a)
We need to find the second largest increase from one month to the next.
We can see the first largest increase is from:
and the difference between these two is approximately:
The second largest increase is from:
• month 1 to month 2
because the difference between these two is approximately:
This is less than the first largest increase but greater than all the other increases.
b)
The largest decrease from one month to the next is from:
• month 4 to month 5
because the difference between these two is approximately:
This is the greatest decrease (i.e. the most negative increase) of all the months.
c)
We need to find the least and greatest earnings.
We can see that these happen during:
• month 6 (least: $25)
• month 4 (greatest: $60)
d)
The two months with the same earnings we can see are:
• months 4 and 8 ($60)
e)
The difference between the least and greatest earnings is the difference between the two earnings we identified in part (c):
• $60 - $25 = $35
f)
The smallest change is the difference between the two earnings that are closest together. We can identify these as:
- months 3 and 4
- or
- months 7 and 8
The difference between either of these pairs is approximately:
• $60 - $55 = $5