- AB
- BA
- CC
- DD
Step-by-Step Solution
A part-of-a-whole comparison is shown best by a pie chart (circle graph), which is B. A is a bar graph, C is a histogram (for grouped data) and D is a line graph (for change over time).
Answer: A) B
Kavya wants to show how her family's monthly income is divided among food, rent and savings, so that each part is seen as a share of the whole. Which of the charts A, B, C, D is the right kind to use?
Class 8Data HandlingData Handling
Key idea: Histograms — bars that touch
A histogram is a bar graph for **grouped** data:
- The -axis shows class intervals (continuous, so bars TOUCH).
- The -axis shows frequency.
- Bar widths are equal (one per class).
- Bar height = frequency of that class.
Difference from a regular bar graph: bar graphs separate distinct categories with gaps; histograms show continuous data with no gaps.
- The -axis shows class intervals (continuous, so bars TOUCH).
- The -axis shows frequency.
- Bar widths are equal (one per class).
- Bar height = frequency of that class.
Difference from a regular bar graph: bar graphs separate distinct categories with gaps; histograms show continuous data with no gaps.
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