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গণিত
পাটীগণিত (Arithmetic)
পরিসংখ্যান (Statistics)
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পরিসংখ্যান (Statistics)
পরিসংখ্যান (Statistics)
গণিত - পাটীগণিত (Arithmetic) - পরিসংখ্যান (Statistics)
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Please, contribute to add content into পরিসংখ্যান (Statistics).
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#.
A researcher computed the mean , median and standard deviation for a set of performance score . If 5 were to be added to each score , which of these three statistics would change ?
The mean only
The median only
The standard deviation only
The mean and median only
The mean and the standard deviation only
Bangladesh Bank - Assistant Director - 2011
গণিত
পরিসংখ্যান (Statistics)
#.
In 2007, the arithmetic mean of the annual incomes of Rahim and Karim was Taka 3800 . The arithmetic mean of the annual incomes of Karim and Ripon was Ripon and Rahim was TaKa5800. What is the arithmetic mean of the incomes of the three ?
3200
1200
2400
4800
None of them
Bangladesh Bank - Assistant Director - 2012
গণিত
পরিসংখ্যান (Statistics)
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