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100.00 Dollar US$ What is half the contrast? Anton
 Location: Anton, Colorado, United States
What is half the contrast?
Quasivariance is a measure of data that can be used to estimate potential downside risks for an investment portfolio. Quasivariance is calculated by measuring the dispersion of all observations that fall below the mean or target value of a set of data. Half of the variance is the mean of the squared deviations of the values that are below the mean.
The main concerns
The quasivariance equation can be used to measure downside risk for a portfolio.
Semivariance considers only observations that are below the mean of the data set.
Spreadsheet software can be useful in calculating the semivariance for your business portfolio.
https://www.freeforexsignals.com/
Understanding quasicontrast
The semicontrast formula is
\ start {align} & \ text {Semivariance} = \ frac1n \ times \ sum ^ n_ {r_t<\ text {Average}} (\ text {Average} r_t) ^ 2 \\ & \ textbf {where:} \ \ & n = \ text {Total number of below average notes} \\ &r_t = \ text {Observed value} \\ & \ text {Average} = \ text {Average or target value of data set} \ end {alignment}
Half the variance =
N
1
X
s
R
<Average
∑
N
(Medium  p
R
)
2
Where:
n = total number of notes below average
s
R
= Observed Value
Average = the mean or target value of the data set
What does the pseudocontrast tell you?
Contrast is similar to quasicontrast, but it only considers belowaverage observations. Semivariance is a useful tool in portfolio or asset analysis because it provides a measure of downside risk.
While standard deviation and variance provide measures of volatility, quasivariance only looks at the negative volatility of an asset. Quasivariance can be used to calculate the average loss that a portfolio can incur because it deviates all values above the average, or above, the investor's target return.
https://www.freeforexsignals.com/
For risk averse investors, identifying optimal portfolio allocations by minimizing partial covariance can reduce the likelihood of a significant depreciation of the portfolio.
Calculate using a spreadsheet
To use a spreadsheet program to calculate the quasivariance:
Create a column  for example, Column A  that contains all of the returns in the portfolio.
Remove all returns above average from Column A.
In column B, subtract the remaining returns in column A from the mean.
In column C, square the difference, find the sum, and divide the sum by the number of returns that are below the mean.
Different spreadsheets may have different functions and some have easier ways or shortcuts to perform this calculation.
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