$28$ Suppose you have performed an event study analysis, and estimated the abnormal returns

for $5$ firms and for the entire event window $-3,3,$

Abnormal returns $($Event window$)$

Please calculate the aggregated mean abnormal return across firms and through time for

the sub$-$window $[-1,1],\frac{?}{\text{b}\text{a}\text{r}}(CAR)(-1,1).$

Please type in the value with three decimals here:

You will need to copy the contents of the datafile from Google Sheets to your local Excel

to do the calculation.

Alternatively, you may also directly type in the relevant numbers manually in Excel to do

the calculation without copying from the Google sheets under the resource.