Produce a histogram of the price data

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Consider weekly closing prices for Honda stock over the course of 30+ years (Honda2); the series goes from Jan 1985 to July 2018.

a) Plot the prices over time. Describe the time series.

b) Produce a histogram of the price data. Explain why this histogram is not appropriate. Hint: it has nothing to do with the shape of the histogram. The answer lies in part (a).

c) Now, produce a column of price differences, that is, the week-to-week changes in prices. Plot these differences as a time series. Explain why a histogram of these data is also not appropriate.

d) Now, produce a column of log (natural log) prices. After getting the logged prices, take the differences of them. Make a time-series plot of the differences in logged prices. What is the interpretation of the time series of the differences in logged prices? Also, produce a histogram of these data. Why is this histogram interpretable?

Reference no: EM133055756

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