state gov APPSC Group 4 (Pre+Mains) Mock Test 2022 Quantitative Aptitude Elementary Statistics

{7, 13, 15, 11, 4}​ -এর মানক বিচ্যুতিটি (স্ট্যান্ডার্ড ডেভিয়েশন) নির্ণয় করুন।

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16
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25
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5
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4
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