Risk factors of dating reltionship

All terms in a covariance matrix need to be added to the calculation.

Let's look at a second example that puts the concepts of variance and standard deviation together.

Calculating variance starts by computing the difference in each potential sales outcome from .2 million, then squaring: Portfolio Variance Now that we've gone over a simple example of how to calculate variance, let's look at portfolio variance.

The variance of a portfolio's return is a function of the variance of the component assets as well as the covariance between each of them.

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Given our portfolio weights of 0.5 for both stocks and bonds, we have all the terms needed to solve for portfolio variance.

Variance Variance (σ) is a measure of the dispersion of a set of data points around their mean value.

In other words, variance is a mathematical expectation of the average squared deviations from the mean.

Expected return is calculated as the weighted average of the likely profits of the assets in the portfolio, weighted by the likely profits of each asset class.

Expected return is calculated by using the following formula: For a simple portfolio of two mutual funds, one investing in stocks and the other in bonds, if we expect the stock fund to return 10% and the bond fund to return 6% and our allocation is 50% to each asset class, we have the following: Expected return (portfolio) = (0.1)*(0.5) (0.06)*(0.5) = 0.08, or 8% Expected return is by no means a guaranteed rate of return.

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