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random variation MCQ Questions for Class 9

random variation se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with random variation.

Question 1/2 Expert Science Exploration: Entering the World of Secondary Science Scientific questions and observations Class 9 Level 5

किस स्थिति में औसत निकालना सबसे उचित होगा?

In which situation would calculating an average be most appropriate?

Explanation opens after your attempt
Correct Answer

A. एक ही मात्रा को कई बार मापने के बादAfter measuring the same quantity several times

Step 1

Concept

The average of repeated measurements can reduce the effect of random variation. Keep all original values recorded first.

Step 2

Why this answer is correct

The correct answer is A. एक ही मात्रा को कई बार मापने के बाद / After measuring the same quantity several times. The average of repeated measurements can reduce the effect of random variation. Keep all original values recorded first.

Step 3

Exam Tip

कई दोहराए मापों का औसत आकस्मिक भिन्नता का प्रभाव घटा सकता है। पहले सभी मूल मान दर्ज रखें।

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Question 2/2 Hard Science Exploration: Entering the World of Secondary Science Scientific questions and observations Class 9 Level 6

किस स्थिति में औसत निकालना सबसे अधिक उपयोगी होगा?

In which situation would calculating an average be most useful?

Explanation opens after your attempt
Correct Answer

B. एक ही लंबाई के कई दोहराए गए मापों का प्रतिनिधि मान पाने मेंTo obtain a representative value from repeated measurements of the same length

Step 1

Concept

The average of repeated comparable measurements reduces the effect of random variation. In exams average only comparable values.

Step 2

Why this answer is correct

The correct answer is B. एक ही लंबाई के कई दोहराए गए मापों का प्रतिनिधि मान पाने में / To obtain a representative value from repeated measurements of the same length. The average of repeated comparable measurements reduces the effect of random variation. In exams average only comparable values.

Step 3

Exam Tip

दोहराए गए समान मापों का औसत आकस्मिक भिन्नता का प्रभाव कम करता है। परीक्षा में केवल तुलनीय मानों का औसत निकालें।

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