Variance and Standard Deviation

Related BrainMass Solutions

• Calculating the mean, variance and standard deviation

  500974 Calculating the mean, variance and standard deviation Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p.

• What would be the mean, variance, standard deviation and shape of the distribution of sample means?

  257477 What would be the mean, variance, standard deviation and shape of the distribution of sample means?

• Accounting: Calculating the expected return and standard deviation of a portfolio.

  (A, B) * standard deviation of A * standard deviation of B Variance = standard deviation^2 --> standard deviation = square root of variance Given: E(A) = 0.15 E(B) = 0.25 Standard deviation of A = 0.1 --> Variance of A = 0.01 Standard deviation

• Variance and standard deviation

  What is the variance and the standard deviation?

• Portfolio of Common Stock

  Variance of a stock = (Standard deviation of a stock)^2. ? Covariance of stock 1 and 2 = (Correlation of stock 1 and 2) * (Standard deviation of stock 1) * (Standard deviation of stock 2). ?

• Stock Variance

  497500 Stock Variance Standard Deviation The standard deviation of the market index portfolio is 20%. Stock A has a beta 1.5 and residual standard deviation of 30%.

• Measure

  But we can use the standard deviation and variance for sample to estimate the standard deviation and variance for population.
  
  So, the estimate of the standard deviation and variance for population are 4.287 and 18.378, respectively.

• Calculating the Variance and Standard Deviation

  Calculate both the variance and the standard deviation of the portfolio. Hello Variance or standard deviation of a stock/portfolio is an indicator of risk.

• Six Sigma and Process Development/Measurement

  Mean = 55 Standard Deviation = Variance^0.5=4^0.5=2.0 USL = 55+4=59 LSL=55-4=51 Cp = Tolerance / (6*standard deviation) = (USL-LSL)/standard deviation Cp=(59-51)/(6*2)=0.667 Cpk = Minimum of (USL-mean)/(standard deviation*3) and (mean-LSL)/(standard

• Mean, Range, Variance, Standard Deviation Calculations

  a) Range = 42 - 37 = 5 Variance = 3.7 Standard deviation = 1.92 b) Range = 100 - 1 = 99 Variance = 1949.25 Standard deviation = 44.15 c) Range = 100 - 2 = 98 Variance = 1307.84 Standard deviation