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Appendix B

This document presents a comprehensive analysis of stock price data for five companies, including two oil stocks and three chemical stocks, over a 20-day period. It details summary statistics, principal components (P.C.s), and variance analysis through eigenvalues. Additionally, it provides insights into the test scores data in R-code, highlighting corrections and errors in the previous version. This analysis aims to offer valuable information for investors and analysts interested in the performance of these sectors.

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Appendix B

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  1. Appendix B Example 8.1. Stock Price Data

  2. All five stocks

  3. The two oil stocks (20 days)

  4. The three chemical stocks (20 days)

  5. Summary statistics

  6. The 1st and 2nd P.C.s

  7. The 1st and 2nd P.C.s (20 days)

  8. Variance of P.C.s (eigenvalues)

  9. Example 8.2. The test scores data In R-codes

  10. (This is wrong!)

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