Final answer:
The correlation of 0.61 indicates a moderate positive relationship between drug dosage and blood pressure increase.
Step-by-step explanation:
If a new drug introduced onto the market shows a correlation of 0.61 with blood pressure, it suggests there is a moderate positive relationship between the drug dosage and the increase in blood pressure. This means that as the dosage of the drug increases, blood pressure tends to increase as well. However, correlation does not imply causation, so while the two variables move together to some degree, it does not necessarily mean the drug dosage causes the increase in blood pressure without further research.