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a) Find the median of the following observations arranged in the ascending order:
8,11, 13, 15, x + 1, x + 3, 30, 35, 40, 43 is 22. Find the value of x.

a Find the median of the following observations arranged in the ascending order 811 13 15 x 1 x 3 30 35 40 43 is 22 Find the value of x class=

Respuesta :

Answer:

x = 20

Step-by-step explanation:

Median:

  [tex]\sf \text{\bf Number of data is 10. So the median will be the average of $n^{th} and (n+1)^{th} term $ }[/tex]

Median = average of 5th and 6th term

            [tex]\sf = \dfrac{(x +1) + (x+ 3)}{2}\\\\ =\dfrac{x +x + 1 + 3}{2}\\\\= \dfrac{2x + 4}{2}[/tex]

It is given that median = 22

                  [tex]\sf \dfrac{2x + 4}{2}= 22\\\\2x + 4 = 22*2\\\\2x + 4 = 44[/tex]

                         2x = 44 - 4

                         2x = 40

                            x = 40/2

                            [tex]\sf \boxed{x = 20}[/tex]