MAF101 Lecture Notes - Lecture 6: Weighted Arithmetic Mean, Liquidity Risk, Product Recall

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14 Aug 2018
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*risk and returns always comes together as a pair. Return is profit or loss from an investment eg: deposit, stock, bond. Dollar return: profit or loss from investment in terms of dollar amount. Dollar return = dollar income + capital gain. Dollar income = cash received during holding period. Capital gain: difference between selling and purchasing prices. Efficiency of investment: how much capital they started with. Expected return, e(r) : the rate of return expected to be realized from an investment over a long period of time. Expected return, is also known as required rate of return. Required rate of return, is the minimum expected return to satisfy investors. Chance that an outcome other than the expectation occurs. Risk refers to a variability in 1) cash flows 2)returns. Probability distribution is key to describe the variability. Bigger the variability the risker it is (as there is more uncertainty). We want less variability (want it to be small as possible).

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