For every wrong answer, maintain an "Error Log." Shahid Jamal’s problems often have traps—like using an n-1 denominator for sample variance when the data represents a population. The PDF allows you to screenshot your errors for revision before finals.
For students who need access to the material but may face budget constraints, there are better alternatives to piracy: For every wrong answer, maintain an "Error Log
If you can’t obtain Shahid Jamal’s book immediately, use these high-quality open resources: For every wrong answer
| Resource | Focus | |----------|-------| | OpenIntro Statistics (free PDF) | Theory + exercises with solutions | | Khan Academy – Statistics & probability | Video explanations + practice quizzes | | Penn State STAT 414/415 | Online textbook with problems | | MIT OpenCourseWare – 18.05 | Problem sets + solutions (R & theory) | | Statology.org | Hundreds of solved practice problems | For every wrong answer, maintain an "Error Log