## AP Statistic Class

In math, I’m taking an AP statistic class which we are learning about statistics and probability. Even though I’m not taking the AP exam but I’m still learning from it because it does help if I’m doing research in the future. This also helps me to work harder and help me with my reading skill because it’s a difficult concept. In these few months, we were studying about sampling distributions, normal distribution, and confidence intervals.

## Statistic

The statistic is a very new and complex topic that we start to study this school year. Our unit 3 topic mainly about scatterplot, response and explanatory variables, linearity, correlation, associations, and their summaries, R and R-Squared, residuals, least square regression lines, outliers and influential points on a scatterplot, transformations (minor topic), reading computer outputs and how to use functions in the calculator. When we studied scatterplot I have a hard time of how to interpret the slope because if we missed said of any important words everything is going to mess up. My math teacher, Jeff, say my name in class to identify the slope then interpret the slope. I was so shocked and nervous because I have no idea what to explain, and every word I have in my head kind of mess up. The words that I always keep in mind: explanatory, response, predicted, changing Y over changing X. When I started to interpret the slope, it wasn’t correct. But does it stopped me? I know for sure I need to work two times harder than my fellow classmate of how to be confident of how to interpret the slope. Outside of class time after lunch, I came to ask my teacher to explain deeper and another way that I can understand it better. It took him only 15 minutes to explain. I took all the note and try to remember clearly of how to interpret the slope. From that time on whenever there is a question to interpret the slope, Jeff would call out my name and complete the question. Before our Christmas break, we took the test and finally I interpret slope correctly.

## Math – Unit Circle

In order to get a good score in math for the SAT we have to learn, practice, practice, and practice. The first day in math Jeff (our math teacher) asked us to note down all the section the students want to improve so he can fill in all the gaps for us in the next two months. Based on the majority most of us wants to work on the unit circles.

The equation itself it looked so scary. I think in my head “do I have to memorize all the equations? How can find all the angles in our head? Do we need to use a calculator?” All the questions were clear after I took a few lessons in one hour. It’s easy than it looked. I can’t say the unit circle is easy, but in order to feel confident, and to solve it quickly, I need to practice and most importantly I need to find my own strategies.

After I learned new strategies in class and practiced in Khan Academy, I’m able to draw my own unit circle of all the trigs values of special angles (90°, 45°, 30°, and 60°).

Check it out! My first unit circle.

## Math

In math, there are so many ways to practice our skills and the lessons we are learning. One of the useful ways I use all the time to improve math skill is Khan Academy. Sometimes it hard to understand in class so I use my independent time to do Khan Academy. I watched videos and gain the benefit from it. I also learning math to prepare for the SAT because it is very important for my future.