Question 3
Jarina and Sangita collected data on how many students were present in each class (shown in the table on the previous page).
Q. If they want to show their data through a pictograph, where they also use one symbol ☺ for each student, as Lakhanpal did, what are the challenges they might face?
- Lakhanpal used the symbol ☺ to represent absent student.
- Jarina and Sangita collected data on present students across different classes.
- Using the same symbol for a completely opposite meaning, and representing each individual student when counts are large, leads to practical issues in pictograph representation.
Step 1 · Analyze the Data and Existing Pictograph
In Lakhanpal's pictograph, the symbol ☺ represents absent student.
Jarina and Sangita's table records the number of present students in each class (e.g., Class I has present students, Class VIII has present students).
Step 2 · Identify the Challenges
Using symbol ☺ for each present student introduces two major challenges:
- Symbol Confusion: Using the same symbol ☺ for present students that was previously used for absent students causes misinterpretation and confusion for anyone reading both graphs.
- Large Number of Symbols: Classes often have many present students (e.g., to ). Drawing one symbol per student takes too much space and makes counting tedious and difficult.
- Confusion in Meaning: The symbol ☺ represented absent student in Lakhanpal's pictograph; using it for present student causes confusion.
- Large Scale: Drawing one symbol for every present student requires too much space and makes the pictograph difficult to read and count when attendance is large.
- Overlooking Scale: Assuming always works; for large data values, choosing a scale (e.g., ) is necessary.
- Inconsistent Symbol Usage: Using identical icons for opposite categories (absent vs. present) without clear labeling or distinct symbols.
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Q. If they want to show their data through a pictograph, where they also use one symbol ☺ for each student, as Lakhanpal did, what are the challenges they might face?
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