Recent Tutoring Session Reviews
"We covered the lecture slides for chapters 6 and 7, which cover t-distribution, confidence levels and intervals, critical values for margin of error using the z-scores and normal probability distribution, the impact of sample size on the margin of error, tests of significance, null and alternative hypotheses, testing these hypotheses, test statistic, and the p-value."
"We had a very successful session. We discussed F, T, and Z tests; tests for differences in means and variances for two samples; tests of difference of means for one sample; when to use a pooled variance and when not to; how to interpret, graph, and calculate p-values; how to interpret confidence intervals; how to read an ANOVA table; the differences between randomized and randomized block experiments; and other areas related to hypothesis testing. The student seemed to have a good grasp on many of the foundational elements, so we were able to focus on the areas that were specifically challenging him."
"We mostly covered the use of Excel in statistics. First, we used Excel to calculate the mean, variance, and standard deviation of populations and samples. We also talked about reading and understanding graphs, and the different types of statistical analyses used. We discussed the different formulas for samples and populations, as well as how to categorize data. The biggest struggle from this session was using Excel. We discussed the steps to make a histogram using Excel, as well as performing calculations on Excel. She was very receptive of the information and seemed to understand the material better. Her main concern was using Excel, and she was able to write down the steps to making graphs and performing calculations. She will be using the information we learned today to finish her online assignment for the course. I think we thoroughly covered using Excel and she will be able to use the program much more efficiently now."
"We prepared for the student's exam. We went over a practice test her professor handed out, and worked through almost all the problems. She will go to her professor's office hours to review for the exam, as well. We will hold a final review session tomorrow before her exam on Friday."
"We prepared for unit test. The student identified similarities and differences between normal and Chi-squared distributions. We also worked through determining the uses and data types for each distribution. She found confidence intervals and tested hypotheses and also found the minimum sample size necessary to provide a given margin of error. We defined Type I and Type II error."
"We primarily covered the problem of choosing the correct statistical method for a given problem. This was our final session, and I believe the student is in a very good position to do well on her final exam. There is one particular test-taking strategy I taught: Writing down the information given in the problem using your instructor's notation. It can often clarify what method you should be using. I think this will be very helpful during the final."