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In an experiment the amount of water was increased along with temperature. Why did the result become difficult to interpret?एक प्रयोग में तापमान बढ़ाने के साथ पानी की मात्रा भी बढ़ा दी गई। परिणाम की व्याख्या कठिन क्यों हो गई?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: Two independent variables changed togetherदो स्वतंत्र चर एक साथ बदल गए
Changing two factors together makes it unclear which factor caused the effect. In exams recognise this as confounding.एक साथ दो कारक बदलने से यह तय नहीं होता कि प्रभाव किस कारण हुआ। परीक्षा में इसे भ्रमकारी चर की समस्या समझें।
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