Question

The mean of 8 observations is 25. If 5 is subtracted from each
observation, then find the new mean.
​

Answer 1

$Given \:mean \: of \:8 \: observations = 25$

/* According to the problem given */

If 5 is subtracted from each observation then

$New \:mean = Old \:mean - 5 \\= 25 - 5 \\= 20$

Therefore.,

$\red { New \:Mean } \green { = 20 }$

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