AP Police Constable practice question
If the median and mode of a data of 20 numbers are 250 and 295, respectively, then find the sum of the 20 numbers.
From a AP Police Constable General Awareness practice set · General Awareness
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Correct answer: (D) 4550
Using the empirical relation Mode = 3×Median − 2×Mean: 295 = 3×250 − 2×Mean ⟹ Mean = (750−295)/2 = 227.5. Sum = Mean × 20 = 4550.
हिंदी में प्रश्न
यिद 20 सं ाओं के आँकड़ों की मा का और बहुलक क्रमशः 250 और 295 ह , तो 20 सं ाओं का योगफल ात कीिजए।
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सही उत्तर: (D) 4550
अनुभवजन्य सूत्र Mode = 3×Median − 2×Mean के अनुसार: 295 = 3×250 − 2×Mean ⟹ Mean = (750−295)/2 = 227.5। योग = Mean × 20 = 4550।
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