• Expected return of a portfolio is simply the weighted average of the returns of securities
• The variance of a portfolio is a function of the individual security return variances
• The variance of a portfolio is a function of the covariance
  between them
• There is a positive relationship with both
  the variances and covariance
• Similar to the calculation of standard deviation of a single security, the square root of the variance would be the standard deviation of the portfolio

How many of the above statements are true?