Using the data from Table $12\mathrm{.}3$ what is the volatility of an equally weighted portfolio of Cisco and Starbucks stock?

The volatility of the portfolio is $\%.($Round to one decimal place.$)$

ata table

TABLE $12\mathrm{.}3$

Estimated Annual Volatilities and Correlations for Selected Stocks

$($Based on Monthly Returns, January $2009-$December $2018)$

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