- A1/2
- B5/8
- C1/4
- D3/8
Step-by-Step Solution
The sectors are not equal, so use angles: . (Counting 2 of 4 sectors to get is wrong.)
Answer: D) 3/8
This spinner at a Diwali mela has four unequal sectors, drawn at the angles marked. If the pointer is spun once, what is the probability that it stops on Blue or Yellow?
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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