CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

The mean and median of the numbers 1, 2, 3, 4, y, 8, 9, 10, 12 and x written in increasing order are both 10, then the values of x and y are:


  1. x=15,y=36

  2. x=39,y=15

  3. x=39,y=12

  4. x=15,y=36


Solution

The correct option is C

x=39,y=12


Given numbers are 1, 2, 3, 4, y, 8, 9, 10, 12 and x
 Mean=xiN10=1+2+3+4+y+8+9+10+12+x10100=49+x+yx+y=51
and median=(n2)th observation+(n2+1)th observation210=y+8220=y+8y=12 x=5112 
       =39

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
QuestionImage
QuestionImage
View More...



footer-image