संख्या 50, 48, 47, 48.5, 50.5, 52, 48.8, 46 की माध्यिका होगी:

  1. 48
  2. 50
  3. 48.5
  4. 48.65

Answer (Detailed Solution Below)

Option 4 : 48.65
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धारणा:

माध्यिका:

स्थिती 1: यदि अवलोकनों की संख्या (n) सम है

\({\rm{Median\;}} = {\rm{\;}}\frac{{{\rm{value\;of\;}}{{\left( {\frac{{\rm{n}}}{2}} \right)}^{{\rm{th}}}}{\rm{\;observation\;}} + {\rm{\;\;value\;of\;}}{{\left( {\frac{{\rm{n}}}{2}{\rm{\;}} + 1} \right)}^{{\rm{th}}}}{\rm{\;observation}}}}{2}\)

स्थिती 2: यदि अवलोकनों की संख्या (n) विषम है

\({\rm{Median\;}} = {\rm{value\;of\;}}{\left( {\frac{{{\rm{n}} + 1}}{2}} \right)^{{\rm{th}}}}{\rm{\;observation}}\)

गणना:

Given numbers are 50, 48, 47, 48.5, 50.5, 52, 48.8, 46

Arranging the number in increasing order

46, 47, 48, 48.5, 48.8, 50, 50.5, 52

The number of terms n = 8, which is even.

Therefore,

Median \(= \frac{\left(\frac{8}{2}\right)^{th} \ \text{term} \ + \left(\frac{8}{2}+1\right)^{th} \ \text{term}}{2}\)

\(=\frac{48.5 + 48.8}{2} = \frac{97.3}{2}=48.65\)

Hence, the median of the given numbers is 48.65.

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