A school in Bhopal gave a randomly selected half of its tenth-grade students access to an app-based maths tutor, while the other, similarly-performing half continued with the usual routine. After one term, the app-using group's average maths score was 40% higher than the control group's. The school concluded the app improved maths performance. Which of the following, if true, would most STRENGTHEN the argument above?
From a RBI Assistant Prelims Reasoning practice set · Reasoning
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Correct answer: (B) Both groups had similar average maths scores before the trial began, and no other change was made to either group's routine during the term.
हिंदी में प्रश्न
भोपाल के एक स्कूल ने अपने दसवीं कक्षा के छात्रों में से यादृच्छिक रूप से चुने गए आधे छात्रों को एक ऐप-आधारित गणित शिक्षक तक पहुंच दी, जबकि समान प्रदर्शन वाले बाकी आधे सामान्य दिनचर्या में रहे। एक सत्र के बाद, ऐप उपयोग करने वाले समूह का औसत गणित स्कोर नियंत्रण समूह से 40% अधिक था। स्कूल ने निष्कर्ष निकाला कि ऐप ने गणित के प्रदर्शन में सुधार किया। निम्नलिखित में से कौन सा कथन, यदि सत्य हो, तो उपरोक्त तर्क को सबसे अधिक मज़बूत करेगा?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) परीक्षण शुरू होने से पहले दोनों समूहों के गणित के औसत अंक समान थे, और सत्र के दौरान किसी भी समूह की दिनचर्या में कोई अन्य बदलाव नहीं किया गया।
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