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The daily changes in the closing price of stock follow a random walk. That is, these...

The daily changes in the closing price of stock follow a random walk. That is, these daily events are independent of each other and move upward or downward in a random matter and can be approximated by a normal distribution. Let's test this theory.

Use either a newspaper, or the Internet to select one company traded on the NYSE. Record the daily closing stock price of your company for the six past consecutive weeks (so that you have 30 values). Decide whether the your 2 data sets are normally distributed by creating a histogram or a boxplot. Please attach your histogram or boxplot as a Word document in your post.
Discuss your results. What can you say about the stock with respect to daily closing prices and daily changes in closing prices. Which, if any, of the data sets are approximately normally distributed?

math   Statistics-And-Probability   
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