Recent Tutoring Session Reviews
"During this session we worked on testing hypothesis using two methods. Either finding a p-value and comparing it to a predetermined alpha value. Or using the alpha value to find critical values and compare these to the sample mean."
"Today we focused on exercises using the standard normal distribution and Z scores. The student does well calculating Z scores and reading the table to identify the proportion associated with different scores."
"We briefly discussed the student's midterm and then moved on to her most recent homework assignment, dealing with simulations and the scrambling method for determining p-values from small samples. She was again enthusiastic about the material and seemed to grasp the concepts after we spent time discussing them."
"The student and I reviewed for her exam on Thursday. We covered hypothesis testing for z tests and one sample, independent samples, and paired samples t tests. She is doing really well with each of the tests and has made a lot of progress in figuring out which test to use and recognizing all of the steps she needs to take."
"The student had completed the trials test for homework on the Stats. We then did a question which was a test of significance for a new drug to lower high blood pressure. We used the Z Test for difference in means and got a p value of .07, which means that she failed to reject the null. We then worked through another Stats worksheet. The student is getting better at working these problems with the repeated practice. She has a problem to complete for homework which is a test of significance relating to elevated heart rate after a bout of exercise. Also we discussed some issues with her engineering project which is an elliptical pool table. One suggestion was to line the cushion with square sectioned elastic. This will improve the bounce of some of the harder balls."
"The student and I started by reviewing his answers to Homework 3, which were well done, on the whole. One of the problems was particularly difficult -- namely, guessing the standard deviation by working backwards from Chebyshev's Theorem. We went step-by-step through that problem. We then went through questions that he had on the Homework 4 problems. These included use of Venn diagrams to show complements. We then moved into material at the beginning of Chapter 5, which included concrete and discrete random variables, as well as probability distributions, expected values, and variance. We'll be doing Chapter 5 over at least two lessons, because the material is particularly dense. He did an excellent job, concentrating on difficult material, and is to be commended for the commitment to his homework and interest in statistics!"
"For this session, we covered binomial distribution, how to graph it on a histogram, the mean and standard deviation, and application of the formula to word problems. The student understood the big picture of the formulas. For any question he didn't know how to do, I would explain to him the concept, and also show the formula or instruction in the textbook. Once he learns something he retains it and applies it quickly, which is great! To succeed in this course we need to continue on really understanding those detailed concepts. He's an enthusiastic student and I think he'll do great in this course!"
"We went over probability problems that concerned change in investments. I have no concerns from this session."
"From where we left off on our first meeting, the student has done well. We started at the very fundamental level of statistics and worked out way up. Our goal is to get her understanding the material out of her 500 level college book within 9 weeks. This will be a great challenge, yet she is committed to successfully completing her college course during a summer session. We will cover 2 chapters a week in her practice outline book."
"Today in our session we went through her homework assignment. Topics covered were: confidence intervals for the difference of two means and the difference of two proportions. We also covered chi-square test of independence. She feels confident in her ability to pass her upcoming exam; however, she will contact me with any further questions."
"We covered central limit theorem and covered most of its applications to random variables and binomial variables. I feel the student got a good understanding of the material but still requires to work through an entire problem on her own. We will meet again Saturday to finish chapter 6 and the hw which is due Wednesday. The goal is to have her do many practice problems in preparation for next exam. HW I assigned was to attempt to finish the last two hw problems on her own."
"Did a review on concepts and definitions from the last couple of chapters. The student had the notes on hand, but had a hard time remembering most of the material without a long look through them. A couple of them were algebra based, so I made sure he knew the basic formulas first before moving forward with certain concepts. We then went back to previous definitions, assumptions, conditions and formulas. When I felt he was ready, I had him take a test that was on everything we learned. He was able to get 36 questions out of 45 correct. We went over all of his mistakes and made sure he understood what to do next time. Once we reviewed his corrections, I assigned him a retake of the test."