ECON 2560 Chapter Notes - Chapter 11: Inverse Relation, Expected Return, Squared Deviations From The Mean

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**converting 3 month return to an annual return example**: (1+3 month rate)1/3 1: converting it to a monthly rate first (1+1 month rate)12 1. If interest rates rise, value of bond goes down. Measuring risk: you need to know how far the securities you invest in range from the average return in first 3 years you may have gain of 50, next 3 years you may have a loss of 35% Variance and standard deviation: variance, average value of squared deviations from mean, measure of volatility, standard deviation, square root of variance, another measure of volatility, expected return = probability-weighted average of possible outcomes. If you have a group of observed values, you use the formula above. Inverse relationship in portfolio helps offset any losses: adding a gold stock to an all-auto portfolio is negative risk even though gold stocks are very volatile.

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