जब शोधकर्ता ऐसे डिज़ाइनों का उपयोग करते हैं जिनमें कई समूहों की आवश्यकता होती है, तो सबसे अधिक उपयोग किया जाने वाला सांख्यिकीय परीक्षण कौन-सा है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?