IS428 AY2019-20T2 Assign LU ZHIMAO

Data Preparation

Every two years, SMU Libraries conducts a comprehensive survey in which faculty, students and staff have the opportunity to rate various aspects of our services. The survey provides SMU Libraries with input to help enhance existing services and to anticipate emerging needs of SMU faculty, students and staff.

In 2018, the library survey was conducted in February.

Selection of Graphs used in Data Visualization

Graph Type	Reasoning	Picture
Likert Scale	They are one of the most reliable ways to measure opinions, perceptions and Behaviours. It is used to an analysis survey question that uses a 5 or 7-point scale, in our Survey Data it uses 7-point scale and it referred to as a satisfaction scale, that ranges from Low (represented by 1) to High 7 (represented by 7).	Example of Likert Scale Chart
KPI Performance Chart	The KPI chart is used to, at a quick glance, give information about the current performance of the library. KPIs can be used to track the performance of the library against importance. They can provide a management tool for gaining insight and decision making. For our library survey data analysis is to identify the gaps between the importance and performance and in this case, both indicators are set by the survey responders. By looking at the gap we are able to identify if the library services currently under user's expectation or achieved user's expectation.	Example of KPI Performance Chart
Vertical Bar Chart	Use vertical column charts to display ordinal variables. For Net Promoter Score, it arranges ordinal categories from left to right so readers can view the sequence accordingly.	Example of Vertical Bar Chart
Horizontal Bar Chart	Use horizontal bar charts to display nominal variables like Question ID. It allows arranging Question ID in a list from top to bottom and in a horizontal manner.	Example of Horizontal Bar Chart