3. Results
Here is the data:
Time for Average Link Click
for Three Window Sizes in Seconds
|
| Subject |
Small |
Medium |
Large |
| 1 |
7.17 |
6.00 |
4.86 |
| 2 |
8.43 |
9.33 |
5.00 |
| 3 |
8.56 |
7.86 |
5.17 |
| 4 |
13.0 |
6.50 |
8.78 |
| 5 |
8.11 |
6.00 |
5.57 |
| 6 |
7.57 |
5.67 |
6.67 |
| 7 |
10.5 |
8.22 |
5.14 |
| 8 |
11.3 |
10.2 |
6.00 |
| 9 |
8.56 |
6.57 |
5.50 |
| 10 |
6.17 |
12.0 |
7.00 |
| 11 |
11.3 |
8.44 |
4.43 |
| 12 |
11.0 |
9.00 |
7.11 |
|
| Average |
9.31 |
7.98 |
5.94 |
| Variance |
4.25 |
3.77 |
1.54 |
| Std. deviation |
2.06 |
1.94 |
1.24 |
A graph showing the means and standard deviations for link click times for the three window sizes
| Analysis of Variance (ANOVA) Results |
| SS |
df |
MS |
F |
P-value |
F critical |
| 69.24 |
2 |
34.62 |
11.93 |
0.00 |
3.44 |
This data clearly indicates that the larger the window got, the better the
times were. As the ANOVA shows, the results are statistically significant
(F is significantly more than F critical). This analysis was
done with Microsoft Excel '97, and was generated from this
raw data.
Most users preferred large windows, and most users did best with the largest window. As shown in the following graph, the large window was almost the unanimous preference.
A graph showing user preferences and user performance for the three window sizes.
Continue
Return to the Title Page for "Screen Size and Web Browsing"