What is the value of #x# such that the data set has a mean of 35: #31.7,42.8, 26.4, x#?
1 Answer
Nov 17, 2017
Explanation:
#• " mean "bar(x)="sum of data set"/"count"#
#rArr(31.7+42.8+26.4+x)/4=35#
#rArr(100.9+x)=140larrcolor(blue)"cross-multiplying"#
#rArrx=140-100.9=39.1#
