Question

the mean of 11 observations is 70.5. if one observation is deleted find the new mean​

Answer 1

Answer:

if delete observation is 5.5 then

Step-by-step explanation:

$70.5 \: is \: the \: mean \: \\ so \: if \: we \: removed \: 5.5 \: = \\ 70.5 - 5.5 = 65.5 \: \\ so \: 65.5 \: is \: the \: new \: mean \: of \: the \: observation$