Question

Find the value of , if the median of following data is 20. 7, 11, 15, 17, , 21, 27, 29, 31, 34​

Answer 1

Answer:

7,11,15,17,x,21,27,29,31,34

$median = \frac{7 + 11 + 15 + 17 + x + 21 + 27 + 29 + 31 + 34}{10} \\ 20 = \frac{192 + x}{10} \\ 20 \times 10 = 192 + x \\ 200 = 192 + x \\ x = 200 - 192 \\ x = 8 \: answer$