Of the following list of numbers, which has the greatest standard deviation?

A 1, 2, 3
B 6, 8, 10
C 2, 4, 6
D 4, 7, 10

Correct Answer: 4, 7, 10

দেখেই বোঝা যাচ্ছে। ৪,৭,১০ এর গড় ৭। গড় এর সাথে বাকি দুটো সংখ্যার পার্থক্য ৩ যেটা বাকি অপশন গুলোর গড়ের সাথে অন্য সংখ্যার পার্থক্যের চেয়ে বড়। তাই ৪,৭,১০ ই হবে উত্তর। ছবিতে স্ট্যান্ডার্ড ডেভিয়েশন এর ফর্মুলা।
Bissoy MCQ
#পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা #গণিত #বাংলাদেশ অর্থনৈতিক অঞ্চল কর্তৃপক্ষ (সহকারী ব্যবস্থাপক) 25-09-2020

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