Final answer:
Perfect Plungers Plus would give Clara a stable long-term investment.
Step-by-step explanation:
The standard deviation of a stock's closing prices is a measure of how much the prices fluctuate over time. A lower standard deviation indicates a more stable investment.
Based on the given data, Perfect Plungers Plus has a standard deviation of $1.13, while Eye Remember Enterprises has a standard deviation of $9.72. Therefore, Perfect Plungers Plus would give Clara a more stable long-term investment.
This means that the stock prices of Perfect Plungers Plus are likely to change less compared to Eye Remember Enterprises.