AP Police SI practice question
The mode and median of a data set are 18.4 and 54, respectively. What is the mean of the data? (Use the empirical formula.)
From a AP Police SI General Awareness practice set · General Awareness
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Correct answer: (A) 71.8
Empirical formula: Mode = 3*Median - 2*Mean, so Mean = (3*Median - Mode)/2 = (3x54 - 18.4)/2 = (162 - 18.4)/2 = 143.6/2 = 71.8.
हिंदी में प्रश्न
एक आंकड़ों के समूह का बहुलक (मोड) और माध्यिका (मीडियन) क्रमशः 18.4 और 54 हैं। आंकड़ों का माध्य (मीन) क्या है? (अनुभवजन्य सूत्र का प्रयोग करें।)
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सही उत्तर: (A) 71.8
अनुभवजन्य सूत्र: बहुलक = 3*माध्यिका - 2*माध्य, अतः माध्य = (3*माध्यिका - बहुलक)/2 = (3x54 - 18.4)/2 = (162 - 18.4)/2 = 143.6/2 = 71.8।
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