Variance and standard deviation.$$Calculate the variance and the standard deviation of U$.$S$.$ Treasury$$ bills, long$-$term government$$ bonds, and$$ small$-$company stocks for $1950$ to$1959,1960$ to$1969,1970$ to$1979,$ and $1980$ to $1989$ from Table $8\mathrm{.}1.$ Which had the highest$$ variance? Which had the lowest$$ variance? Click on the Spreadsheet Learning Aid to see Table $8\mathrm{.}1$long dash$$Year$-$by$-$Year $$Returns$,1950-1999.$

$$Hint: Make sure to round all intermediate calculations to at least seven$(7)$ decimal places. The input$$ instructions, phrases in parenthesis after each answer$$ box, only apply for the answers you will type.

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Part $1$

What is the variance of U$.$S$.$ Treasury bills for $1950$ to$1959,1960$ to$1969,1970$ to$1979,$ and $1980$ to$1989?$

The variance of U$.$S$.$ Treasury bills for $1950$ to $1959$ is

$$

$0\mathrm{.}00554\%.($Round to five decimal$$ places.$)$

Part $2$

The variance of U$.$S$.$ Treasury bills for $1960$ to $1969$ is

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$.01856\%.($Round to five decimal$$ places.$)$

Part $3$

The variance of U$.$S$.$ Treasury bills for $1970$ to $1979$ is

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$0\mathrm{.}038048\%.($Round to five decimal$$ places.$)$

Part $4$

The variance of U$.$S$.$ Treasury bills for $1980$ to $1989$ is

$$

$.08287\%.($Round to five decimal$$ places.$)$

Part $5$

What is the standard deviation of U$.$S$.$ Treasury bills for $1950$ to$1959,1960$ to$1969,1970$ to$1979,$ and $1980$ to$1989?$

The standard deviation of U$.$S$.$ Treasury bills for $1950$ to $1959$ is

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$.744\%.($Round to three decimal$$ places.$)$

Part $6$

The standard deviation of U$.$S$.$ Treasury bills for $1960$ to $1969$ is

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$1\mathrm{.}363\%.($Round to three decimal$$ places.$)$

Part $7$

The standard deviation of U$.$S$.$ Treasury bills for $1970$ to $1979$ is

$$

enter your response here$\%.($Round to three decimal$$ places.$)$