The mean of 50 observations was 36. It wa… | Answer

Subject

Bank Exam

Topic

Pubail Bank Ltd. - Trainee Assistant Teller - 2017

The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is:
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ক)

35.2

খ)

36.1

গ)

36.5

ঘ)

39.1

Explanation

Solution: প্রশ্নে বলা হচ্ছে যে, 50 টি পর্যবেক্ষণের গড় 36. পরে দেখা গেল যে, 48 কে ভুলক্রমে 23 ধরা হয়েছিল । সঠিক গড় কোনটি ? 50 টি পর্যবেক্ষণের সমষ্টি = 50

\times

36 = 1800 নতুন সঠিক গড় হবে =

\frac{{1800 - 23 + 48}}{{50}} = \frac{{1825}}{{50}}

= 36.5

Convict : Imprisonment ::Water : Flood ::নিচের কোন বানানটি অশুদ্ধ ?Belt : Trousers ::নিচের কোনটি নিত্য পুংলিঙ্গবাচক শব্দ ?Lungs : Blood ::Habits : Instincts ::নিচের কোনটিতে 'উপ' উপসর্গ 'অপ্রধান' অর্থে প্রযুক্ত হয়েছে ?

The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is:Reading

The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is:

Explanation

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The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is:
Reading