The following observations have been written in the ascending order :निम्न प्रेक्षण आरोही क्रम में लिखें हुए हैं :
The following observations have been written in the ascending order :
28, 31, 47, 51, a, a+3, 71, 74, 78, 90
If the median of the data is 61.5, then the mean of the data is :
निम्न प्रेक्षण आरोही क्रम में लिखें हुए हैं :
28, 31, 47, 51, a, a+3, 71, 74, 78, 90
यदि इन आंकड़ों का माध्यक 61.5 है, तो इन आंकड़ों का माध्य है :
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Correct answer: (B) 59.359.3
Explanation
Median = (a + a + 3)/2 = 61.5 gives a = 60. Sum = 28 + 31 + 47 + 51 + 60 + 63 + 71 + 74 + 78 + 90 = 593, so mean = 593/10 = 59.3.माध्यक = (a + a + 3)/2 = 61.5 से a = 60। योग = 28 + 31 + 47 + 51 + 60 + 63 + 71 + 74 + 78 + 90 = 593, अतः माध्य = 593/10 = 59.3।