Usability Evaluation of Interactive System

Running head: USABILITY EVALUATION OF INTERACTIVE SYSTEM
Usability Evaluation of Interactive System
Name of the Student
Name of the University
Author’s note:

1USABILITY EVALUATION OF INTERACTIVE SYSTEM
Table of Contents
Part ONE: The Interactive System and Its Users.............................................................................2
Part TWO: The Use Cases...............................................................................................................3
Part THREE: The Usability Requirements......................................................................................4
Part FOUR: The Evaluation Methodology......................................................................................5
Part FIVE: The Evaluation..............................................................................................................8
Part SIX: The Findings of the Evaluation......................................................................................15
Bibliography:.................................................................................................................................17

2USABILITY EVALUATION OF INTERACTIVE SYSTEM
Part ONE: The Interactive System and Its Users
The selected interactive system is an online web application that allows the customers to
buy clothing and fashion products. The name of the interactive system is Missguided (Women
Clothing Website). The interactive system is an online retail website. The system has
authorization and authentication functions. The system is developed on web 2.0 technologies. It
has a menu that allows the user to navigate through the system freely. The account is also
available for registered users. After registering into the system, the user can use the provided
login credentials to login to their account. The account holds all the purchasing and short listed
products. During the registration, the system stores the email address of the user. The system
uses this email address for promoting products and informing user about the availability of the
products. The system has an interface for the administrators so that they can adjust contents of
the system and make desired changes. The user can add products to wish list if not available
currently. The purchasing of product is also very easy because the system has a cart that manages
all the products in a single order.
The user of the system are customer, admin and service provider. The system will be
hugely by the customers. They have the biggest interest on the system. Every purchase they
make from the owner organization has to be made through this system. The admin are in the
middle of customer and service provider in terms of interest and power over the system. They
admin can make changes in the system appearance, working and many other things. The service
provider remains the most powerful user as they control the system. They can update, install
patch, change resources and do every other possible things mentioned in SLA that can affect the
system processing.

3USABILITY EVALUATION OF INTERACTIVE SYSTEM
Part TWO: The Use Cases
Figure 1: Use Case Diagram of Missguided Interactive System
(Source: Created by Author)
Login: The actor of this use case is Registered Customer. The actor provides stored login
credentials to the login form to log into the system.
Register: The actor of this use case is New Customer. The actor enter all the personal
details into the registration form. The exception can be that provided email id is blocked.

4USABILITY EVALUATION OF INTERACTIVE SYSTEM
Place Order: Any of the web customers can place an order. This use case is related to
add product to cart use case. The exception can be that selected product cannot be delivered to
specified location.
Manage Product: The admin is the actor of this use case. The actor can add, delete and
update the product details. The actor can also manage stock related to a product.
Manage Content: The administrators can manage the contents like text, posts, images
and other elements present in the pages. They have the authority to update style and theme of the
system.
Update System: The service provider can update the system. This actor can add modules
to the system or update its working procedure.
Part THREE: The Usability Requirements
Learnability: This refers to the capacity of the system, how easily the functions can be
presented to the users. The users should be able to understand how to use the system very
efficiently. The system must provide hints about how to operate its functions or what button does
what job. The learnability can also be effectively used by showing the outcome of clicking
different buttons or links.
Performance: In terms of Web applications, the performance is a very crucial usability
requirement. In this era, the competition of online retail is extremely high and a system without
high performance capability cannot be a choice of the customers. The performance of the system
will affect the user experience. The performance also denotes that how easily the customer can
execute a specific task.

5USABILITY EVALUATION OF INTERACTIVE SYSTEM
Availability and Accessibility: These types of interactive systems must be available to the
users 24*7. The user can try to connect to the system anytime from anywhere. The designers also
has to be concern about the fact that persons with different disabilities will use the system. The
system should be loaded into the user device with medium internet connection. The online stores
are mostly used through the phones and mobile networks does not provide strong connection like
broadband.
Good Navigation: The users of the system should be able to freely navigate throughout
the system without being three clicks away from whatever they wish to access. The three clicks
technique is a very critical solution to complex and big website navigation. The main menu must
have links to product categories and sub categories.
Undo: It is common for the users to select products and execute a task that they do not
want. The system must provide them the opportunity to rollback to previous state. Taken as an
example, a customer may want to remove a product from the cart or admin wants to delete a
product that they have mistakenly added.
Part FOUR: The Evaluation Methodology
The usability evaluation will be done based on ten usability heuristics. These ten
heuristics will be examined by monitoring the user activities in the system. Few participants will
be employed in this evaluation process. Each user will be given specific tasks that they will carry
out. The user experience can be considered as the qualitative metric that can have impact on
many human interaction factors. The continuous improvement in the human computer interaction
is allowing organizations to provide great user experience. However, checking the impact of the
developed product is always a factor in system development. In order to check the usability of