Final answer:
The coefficient of variation pre-merger for Knight Corporation is 0.64, and post-merger, it is 0.42, indicating more stable earnings after the merger. For risk-averse investors, the lower post-merger earnings variability could increase the P/E ratio, as they may be willing to pay more for perceived stability in earnings.
Step-by-step explanation:
To calculate the coefficient of variation for Knight Corporation before and after the merger, we use the formula: CV = Standard Deviation / Mean (Earnings Per Share). Pre-merger, the coefficient of variation is calculated as $1.92 / $3, which equals 0.64. Post-merger, it is calculated as $1.26 / $3, which equals 0.42. This indicates that post-merger, the earnings per share have a lower relative variability, implying that the earnings are more stable relative to their mean after the merger.
Considering the possible impact on Knight's post-merger P/E ratio, assuming investors are risk-averse, we can expect that the decrease in the standard deviation of the earnings (due to the negative correlation between the firms) might make the stock more attractive to conservative investors. Risk-averse investors prefer stability and predictability in earnings, and therefore a lower coefficient of variation post-merger could lead to a higher P/E ratio. The lower perceived risk may result in these investors being willing to pay more for each dollar of earnings, hence increasing the P/E ratio.