In a factory, machine A produces 60% of items (defective 2%) and machine B 40% (defective 5%). If an item is defective, the probability it came from B is: MCQ with Answer and Explanation
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Question #1
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Consider the following statements about ogive: 1. It is a graph of cumulative frequency. 2. The median can be located from the point where cumulative frequency is N/2. 3. Ogive can be used to estimate mode. Which of the above is/are correct?
Correct Answer: Option D
Explanation:
Ogive plots cumulative frequencies; median is at N/2. Mode is not found from ogive; it is found from histogram/frequency polygon.
Ogive plots cumulative frequencies; median is at N/2. Mode is not found from ogive; it is found from histogram/frequency polygon.
This question belongs to:
Accountancy and Statistics
Statistics
Question #2
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When constructing a frequency polygon, the frequencies are plotted against:
Correct Answer: Option D
Explanation:
A frequency polygon connects the points formed by the class frequencies plotted at the exact midpoints of the class intervals.
A frequency polygon connects the points formed by the class frequencies plotted at the exact midpoints of the class intervals.
This question belongs to:
Accountancy and Statistics
Statistics
Question #3
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Wholesale Price Index (WPI) in India primarily measures price changes for goods at which stage?
Correct Answer: Option B
Explanation:
WPI tracks price movements of goods traded in bulk at the wholesale level (first point of mass sale), reflecting producer and wholesale market inflation, distinct from consumer-focused CPI.
WPI tracks price movements of goods traded in bulk at the wholesale level (first point of mass sale), reflecting producer and wholesale market inflation, distinct from consumer-focused CPI.
This question belongs to:
Accountancy and Statistics
Statistics
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