Recent Tutoring Session Reviews
"We reviewed binomial distributions and probability distributions in order to prepare for the student's upcoming exam. For questions pertaining to binomial distributions, she should use the binomial pdf function (for x value) or the binomial cdf (for the greatest x value) if the question asks her to find a probability. If the question asks her to find the expected value, she should use the equation u=n*p, and if the question asks her to find the standard deviation, she should use the equation stdev=sqrt(n*p*q). For probability distributions, she will need to set up a distribution table. The sum of the third column is the expected value, the sum of the sixth column is the variance, and the square root of the variance is the standard deviation."
"The student and I had a good morning session as he finished up some homework. I left him to complete some of the material on his own, and he generally did a good job. We worked through the structure of hypothesis testing some more, and by the end of the session, he had a good handle of it, along with a good handle on the tests themselves."
"I instructed the client on how to create a study list for his upcoming exam next week. He was focused and seemed to have a reasonable grasp on the materials. I left notes for him to complete a homework set for the rest of the week."
"This was a good session. While we only got through one problem, it was a significant (and long) one, and introduced a new topic: t-tests to compare sample means. We looked at the idea of a matched pairs problem and really tried to understand the idea of null and alternate hypotheses. I think at the end, the hypothesis idea was working, and while the computations were fairly lengthy, we got a solid foundation for future work."
"We discussed how to clean up the data so that an independent t-test can be run. We worked through some of the errors that the student was experiencing and I had him send me the data so I could alter the file such to resolve the error. At the end, we were able to successfully run the first analysis. In the next session, we will cover how to run a chi-square analysis."
"Today, the student and I finished reviewing validity, and we also went back over the basics of observational studies, bias, and sampling. He and I also briefly discussed calculating variance and z-scores."