Midterm II

Exam and Scores

Midterm I with the scores. Also, you can check the histogram of the average two midterm scores.

Mock up exam

Here is the midterm II used in the previous semester for STA 103. You may ignore those question we didn't cover yet (hypothesis testing) and only focus on the materials we covered after midterm I.

Relavent Topics

This exam focuses on topics covered in lecture from June 2nd until June 12nd. These topics include:
  • sampling distribution, sample size calculation, proportions. (Chapter 6)
  • point estimation, efficiency and bias, consistancy. (Chapter 7)
  • method of moments estimation, maximum likelihood estimation (Chapter 18)
  • confidence interval for
    1. single mean, normal population, known s.d.
    2. single mean, normal population, unknown s.d.
    3. difference of two means, normal population, known s.d.
    4. difference of two means, normal population, unknown s.d.
    5. difference of paired sample, normal population, known s.d.
    6. difference of paired sample, normal population, unknown s.d.
    7. single proportion, large population
    8. difference of two proportions, large population
    (Chapter 8)
  • simple linear regression, ordinary least square estimator, confidence interval for regression coefficients estimators, confidence interval for predicted values, regression slope and correlation, coefficient of determination. (Chapter 11, 12, 15)

Logistics

The exam is in class on Friday, June 13.

Write all answers on the exam paper. Answer all questions concisely and clearly. Pay attention to instructions that whether you should show your calculations with the answers.

For the exam, you are not allowed to take any cheating sheet in the classroom. You are also not allowed to look at the textbook, homework, or notes in the exam.

The normal table and binomial coefficients table will be attached in the exam. Bring a calculator to the exam, unless you are really confident in doing arithmatics on the paper :)

When you finished all the problems, double check your answers and make sure that they are correct.

Suggestions for Studying

  • Review your homework problems, review problems and the quiz problems.
  • Do the relavent questions in the mock up exam.
  • Play with those statistics applets collected by Professor Jerry Reiter.