Coefficient of Variance (CoV) is a non-dimensional value calculated by dividing the Standard Deviation of a data set by the algebraic mean (or Average) of the same dataset. Thus CoV = STDEV/AVERAGE. So, in Excel, at the bottom of a column of numbers representing your data set, say in cells B39 to B58, make cell B60 = AVERAGE(B39:B58), B61 = STDEV(B39:B58) and B62 = B61/B60. CoV is frequently expressed as a percentage, so B62 could be = 100*B61/B60
To calculate portfolio variance in Excel, you can use the formula SUMPRODUCT(COVARIANCE.S(array1,array2),array1,array2), where array1 and array2 are the returns of the individual assets in your portfolio. This formula takes into account the covariance between the assets and their individual variances to calculate the overall portfolio variance.
You need to use the variance and covariance functions in Excel 1. Calculate the covariance of the stock returns with respect to an index 2. Calculate the variance of the index 3. Divide the first number by the second. See the related link for a spreadsheet
how to calculate budget variance percentage?
variance - covariance - how to calculate and its uses
actual budget/budget = variance%
Variance = 100*(Actual - Budget)/Budget
Square the standard deviation and you will have the variance.
How do we calculate variance
Standard deviation = square root of variance.
There only needs to be one data point to calculate variance.
The standard deviation is the square root of the variance. So, if variance = 03 = 3 the std dev = sqrt(3) = 1.732
look in a maths dictionary