3. Results
In this experiment we did not observe statistically significant
differences in
performance times, user satisfaction ratings nor rate of erros for
individual subjects.
3.1 Performance Time
For each group (see Table
1), the performance times for the corresponding
trials of all 30 subjects were compiled and the mean and standard
deviations were computed. Table
2 shows these results. In order to
determine if the independent variable, history styles, had a significant
effect on performance time, a 3x1 (single factor) analysis of variance was
computed. The ANOVA determined that the different types of history styles
had no statistically significant difference on performance times at the
alpha = 0.05 level. This means that there was no single history style
that gave any better performance time over another.
Click here to
see a graph of performance times.
3.2 User Satisfaction
The subjective satisfaction ratings were also compiled and analyzed. The
means and standard deviations were calculated for all 10 scores for each
cell of Table 1.
Table 3
shows the
results. As with performance time, a 3x1 single factor analysis of
variance was used for each treatment to detect if the history styles
significantly affected users' satisfaction. The ANOVA showed that there
was no statistically significant affect at the alpha = 0.05 level,
indicating that one history style was not preferred over another.
Click here to
see a graph of user satisfactions.
3.3 Rate of Errors
We calculated the number of questions each subject in each treatement
answered incorrectly. The means and standard deviations were calculated
for these errors. A 3x1 single factor analysis of variance was used for
each treatment to detect if the history style significantly affected the
number of errors made by the subject. The ANOVA showed that there was no
statistical significance affected at the alpha = 0.05 level. This means
that one history style is not better at preventing errors over another.
It should be noted that each question that was answered incorrectly
received a penalty of 2 * Performance Time.
Click here
to see a graph of user satisfactions.
3.4 Memory Recall
We did not analyze the data to determine statistical significance in
memory recall. However, take a look at the
results to see the percentage
of pages recalled per treatment.
Top |
Credits |
Introduction |
Literature Review |
Experiment |
Results |
Discussion |
Conclusions |
Acknowledgements |
References |
Appendices