Median as a positional average (open classes, least affected by extremes, ogive)

This type of question, asked 3 times: CDS 2 2018, CDS 2 2019, CDS 2 2025. All 4 questions below, oldest first.

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Question 1
CDS 2 2018
60 $Consider the following statements : Statement I : Median can be computed even when the end intervals of a frequency distribution are open. Statement II : Median is a positional average. Which one of the following is correct in respect of the above statements ?$
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Question 2
CDS 2 2019
69 $Which one of the following pairs is correctly matched ?$
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Question 3
CDS 2 2025
96 $Which one of the following is a positional average?$
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Question 4
CDS 2 2025
91 $Which measure of central tendency is least affected by the presence of extreme observations in the data?$
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Question 1