Transform the simple returns to log returns

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Reference no: EM131224657

Consider the daily log returns of American Express stock from January 1994 to December 2003 as in Exercise 1.1. Use the 5% significance level to perform the following tests. (a) Test the null hypothesis that the skewness measure of the returns is zero. (b) Test the null hypothesis that the excess kurtosis of the returns is zero.

Exercise 1.1
Consider the daily stock returns of American Express (axp), Caterpillar (cat), and Starbucks (sbux) from January 1994 to December 2003. The data are simple returns given in the file d-3stock.txt (date, axp, cat, sbux).

(a) Express the simple returns in percentages. Compute the sample mean, standard deviation, skewness, excess kurtosis, minimum, and maximum of the percentage simple returns.

(b) Transform the simple returns to log returns.

(c) Express the log returns in percentages. Compute the sample mean, standard deviation, skewness, excess kurtosis, minimum, and maximum of the percentage log returns.

(d) Test the null hypothesis that the mean of the log returns of each stock is zero. (Perform three separate tests.) Use 5% significance level to draw your conclusion.

Reference no: EM131224657

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