Question

If we divide all the observations 18, 33, 36, 39, 44 by 2, then the new mean = _____
(a) 34
(b) 29
(c) 22
(d) 17

Answer 1

Answer:

I think the answer is (d) 17

Answer 2

Answer:

Option (d) is correct.

Step-by-step explanation:

$Given \: observations :\\18,33,36,39\:and \:44$

$Number \: of \: observations (n)= 5$

$Mean (A.M)= \frac{sum\:of\: observations}{number\: observations}$

$A.M = \frac{18+33+36+39+44}{5}\\=\frac{170}{5}\\=34$

According to the problem given,

If observation Divided by 2 then new mean,

$New \: mean = \frac{Old\:mean }{2}\\=\frac{34}{2}\\=17$

Therefore,

$New \: mean= 17$

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