An Analysis of Graphical Representation of Data in Elementary School Mathematics Textbooks
Table 2: Absolute frequencies of types and subtypes by grades (G) and relative frequency by all
types
| Types and subtypes |
G1 |
G2 |
G3 |
G4 |
G5 |
Total of types |
% from all |
| Pictorial units |
635 |
353 |
177 |
116 |
48 |
1329 |
48.15% |
| Free-form pictographs |
331 |
122 |
26 |
29 |
9 |
517 |
18.73% |
| Structured pictographs |
304 |
230 |
125 |
81 |
29 |
769 |
27.86% |
| Abacus pictographs |
|
1 |
26 |
6 |
10 |
43 |
1.56% |
| Numbered lines |
111 |
150 |
193 |
98 |
124 |
676 |
24.49% |
| Regular numbered lines |
110 |
148 |
191 |
96 |
121 |
666 |
24.13% |
| Thermometers |
1 |
2 |
2 |
2 |
3 |
10 |
0.36% |
| Part-whole (PW) graphics |
50 |
143 |
92 |
125 |
116 |
526 |
19.06% |
| Regular PW graphic |
50 |
132 |
38 |
45 |
58 |
323 |
11.70% |
| Bar models |
|
1 |
18 |
9 |
9 |
37 |
1.34% |
| Pie graphs |
|
10 |
36 |
71 |
49 |
166 |
6.01% |
| Bar graphs |
2 |
35 |
11 |
19 |
67 |
134 |
4.86% |
| Regular bar graph |
2 |
35 |
9 |
17 |
67 |
130 |
4.71% |
| Histogram |
|
|
2 |
2 |
|
4 |
0.14% |
| Line graphs |
|
1 |
2 |
6 |
40 |
49 |
1.78% |
| Point graphs |
|
1 |
4 |
9 |
31 |
45 |
1.63% |
| Dot plots |
|
1 |
|
1 |
8 |
10 |
0.36% |
| Scatterplots |
|
|
4 |
8 |
23 |
35 |
1.27% |
| Specific types |
|
1 |
|
|
|
1 |
0.04% |
| Gauge graph |
|
1 |
|
|
|
1 |
0.04% |
| Totals |
798 |
684 |
479 |
373 |
426 |
2760 |
100.00% |
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