SCSI2143-08 PROBABILITY & STATISTICAL DATA ANALYSIS

In Project 2, we have conducted a study of inferential statistics in a group of 4. The focus of of study is on the demography and epidemiology of HIV among adolescents in the world. The purpose of this study is to compare and analysis the difference between estimated number of male adolescents living with HIV over female adolescents, the proportion of adolescents living with HIV in different continents as well as the relationship between the estimated number of adolescents living with HIV and the number of AIDS deaths among adolescents.

In this project,  we used secondary data where we collected from UNICEF data. We were exposed to different methods of parameter estimation from different distributions. Besides, we had learned how to conduct data analysis using hypothesis testing. Eventually, we understood what type of hypothesis testing we shall use to estimate mean, proportion, standard deviation and dependency of different types of data.

During the project, we had face a lot of challenges and difficulties. At first, we could not find a suitable data set as most of the secondary data was collected by large organisation, which involved a very large sample size and population that we could not handle. Fortunately, we managed to find a suitable data set from UNICEF data after few days attempt. We were also confusing on what hypothesis testing shall we conduct to get the most precise estimation and conclusion.

In conclusion, I gained a lot of analytical skills from this project. I have learned how to determine the variables of the hypothesis testing that I wanted to conduct and to make decision after the test. I have gained the ability to collect and analyze information, to solve problems and to make decisions. These abilities will definitely benefit me in the future as they help me to break down complex problems into manageable tasks.

To read more, please click the link below to download my full report:

PSDA Project 2

In Project 1, we have conducted a study of descriptive statistics in a group of 4. The focus of our study is the usage of social media among a random sample of respondents. The purpose of this study is to discover multiple relationships between respondents and the usage of social media such as daily average time spent (hours) on social media, the purpose of using social media, respondents’ behaviors and opinions on social media as well as the manipulating reasons behind these behaviors.

In this project, we were exposed to various form of data including nominal data, ordinal data, interval data and ratio data. We used primary data in this project where we collected via questionnaire and survey. We also got to learn how to present our data visually by using R-Studio. Besides, we had learned how to compare in between each data statistically and found out the similarities and differences between them. Eventually, we understood what graphical method we shall use to compare different types of data.

However, we had found out the weakness of our study after data collection. The data for this surveyed was collected from random sample through Google Form. Majority of our respondents were students since we shared the link to our friends. Hence, the frequency of respondents from other social background and occupation was relatively low. It had caused the comparison of our data based on frequency is not accurate enough. We had figured out some ways to avoid these mistakes again in our future study including limiting the survey to only one certain occupation or spreading the survey to more people from different occupation rather than only student. We had learned a lot from our mistakes.

In conclusion, this study had benefited us a lot, may it be academically or valuable life skills. These skills can give me an added boost of confidence in my personal and future professional life.

To read more, please click the link below to download my full report:

PSDA PROJECT 1