Question

$\sf \maltese\ {\underline{Question}} \ \maltese$

★ A survey regarding the heights (in cm) of 51 girls of Class X of a school was conducted and the following data was obtained :-

$\begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered} \small\boxed{\begin{array}{c |c} \tt{Height\ (in\ cm)} & \tt{Number\ of\ girls} \\ \dfrac{\qquad\qquad}{ \sf Less\ than\ 140} &\dfrac{\qquad\qquad}{ \sf 8} & \\ \dfrac{\qquad\qquad}{ \sf Less\ than\ 145} &\dfrac{\qquad\qquad}{ \sf 81} & \\ \dfrac{\qquad\qquad}{ \sf Less\ than\ 160} &\dfrac{\qquad\qquad}{ \sf 209} & \\ \dfrac{\qquad\qquad}{ \sf Less\ than\ 137} &\dfrac{\qquad\qquad}{ \sf 40} & \\ \dfrac{\qquad\qquad}{ \sf Less\ than\ 180} &\dfrac{\qquad\qquad}{ \sf 66} & \\ \dfrac{\qquad\qquad}{ \sf Less\ than\ 145} &\dfrac{\qquad\qquad}{ \sf 51} &\end{array}} \end{gathered}\end{gathered}\end{gathered}\end{gathered}$

Find the median height.​

Answer 1

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