Thanks to the outbreak of Covid-19, many educational institutes have transformed their course delivery from a face-to-face (F2F) mode to a virtual teaching mode. The operational processes in the F2F mode are different from those in the virtual teaching mode. For instance, instead of getting verbal feedback, instructors encouraged students to type in the Zoom chat tab to provide feedback.

Dr. Goh is conducting online teaching for his students using Zoom. The course was delivered virtually over a six-week period, one lesson in each week. Dr. Goh encouraged students to participate in the Zoom session using chat tab. Dr. Goh would like to understand if the online participation can enhance students' learning experience and their academic performance.

Dr. Goh collected data to proceed with an analysis. He collected two variables, the total number of Zoom chat entries for each student over the six-week period, and the grades of students' first assignment, which covers the topics in the first two weeks. For example, Student A001 has a total of 13 entries in the Zoom chat tab for the six weeks, and he/she receives 75 marks for his/her first assignment.

1. Analyse the chat entry number and academic performance data which is attached with this question. Provide a visualisation and a numerical description of the two variables to present data. Provide a brief justification of your choice. What observations and conclusions can be made from the data visualisation.