Probabillity and Statistical Data Analysis (PSDA) SCSI143-10

In this course, I learned a lot about data organizing, I learned its importance and different methods to organize data. Data exists everywhere in our life, we use it to count numbers and do many other things, it’s really helpful to us, and no matter what we do with data, we need organize it first, so statistics is necessary and important. In fact, from the learning of this unit, I found that a lot of questions were based on real life, such as economic problems, physical exercise progresses and many other things that we see and do in real life. There are several useful methods to organize data, I learned all of them and I think they are very different from each other and they have different uses. They can be graphs or tables. There are bar graphs, line graphs, pie graphs and histogram graphs to show the data in shapes, bar graphs and histogram graphs are more used for looking at the differences between each group of data, line graphs can show the patterns or trends clearly, and pie graphs are more used for showing percentages. I also learned some tables for organizing data, such as frequency tables, stem-leaf plots and box and whiskers. They look very different and they are used differently as well. Frequency tables might be the most useful tables in these three, it can both organize and rank the numbers and easily show the frequency. Stem-leaf plots are used for ranking data in an order, while box and whiskers are used on grids to show the range and quadrilles, and it’s usually used with frequency tables. I also learned how to use SPSS, which is a software to generate all kinds of useful graphs and informations from the raw data that we have gathered. After learning statistics, I feel like I can now do some more interesting and helpful things with raw data now, and I think it’s really powerful. Last but not least, I would like to thank my lecturer, Dr Azlan for teaching us throughout this semester with all the knowledge that could be useful for us in our future career path.