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Checkpoint Extension
Raymond Clark, Angel Lee, Eric Rackear
Problem to be addressed
● Users find it cumbersome to navigate back to previously
seen information on extensive/infinite scroll web pages
● Develop extension allowing users to quickly tag and get
back to information.
Current system
● System closest to
solving the problem
is Scroll To Top
Button
● Essentially the same
thing as pressing
“home” or “end”
keys
● Does not give exact
scroll locations at
specific page points
Our system
● Bright Green
Checkpoints
made at user’s
discretion
● Help menu that
clearly tells what
each shortcut
key does
● Can add,
remove, and
cycle through
checkpoints
User Study Conditions
16 participants
● 18-24 years old
● have at least moderate experience with
computers and web-browsing
● use Google Chrome during the study
Results & Analysis
To test if users would prefer our system more than the current one, we used the System
Usability Scale from 0-100
Current System
Our System
mean
82.03
84.21
standard deviation
15.632
14.631
P-value: 0.295 is greater than 0.10, meaning there is no evidence against the null hypothesis. We
cannot reject the null hypothesis.
Results & Analysis
To test if users would be able to retrieve previous information faster using our system, we used
a scale from 1-5, 1 being the slowest, 5 being the fastest
Current System
Our System
mean
3.69
4.31
standard deviation
1.25
1.078
P-value: 0.067 is between 0.05 and 0.1, meaning there is weak evidence against the null hypothesis.
We cannot reject the null hypothesis.
Conclusions
● Based on the means and standard deviations for both hypotheses, it is too
close to tell whether one system rates higher than the other. Furthermore,
at this time, we are unable to reject either of the null hypotheses.
● Overall, with further study, we might be able to see a better correlation
between increased user satisfaction and the use of our system.