We can perform a scatter plot of this data as:
It seems that there is an inverse relation between the cost per unit and the number of copies.
The cost per unit approaches an asymptote, so it may correspond to a total cost that is equal to a fixed cost plus a variable cost depending on the number of copies.
We can then calculate the total cost for each option by multiplying the unit cost by the number of copies and we will get:
Then, if we transform the data, we can see a positive correlation between the total cost and the number of copies.
This correlation can not be seen just by looking at the unit cost per copy.
Answer:
- If we consider the transformed data (total cost vs. number of copies), we can see a positive correlation.
- If we ony consider the original table (unit cost vs. number of copies), we can not see any correlation.