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গণিত - পাটীগণিত (Arithmetic) - 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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আরও দেখুন...

পাটিগণিত প্রাথমিক ধারণা (Basic Concept) আন্তর্জাতিক গণনা পদ্ধতি (International Counting System পরিমাপ ও একক (Measurement & Unit) ল.সা.গু ও গ.সা.গু (L.C.M and H.C.F) ভগ্নাংশ (Fraction)

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