Question

Mean of 100 observations is found to be 15 and mean of 150 observation is 16. Find mean of 250 observation

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

$\huge{\fbox{\fbox{\blue{\mathfrak{Answer\::18}}}}}$

Answer:18

If the mean =

$\frac{100}{15}$

15

100

Also,

$\frac{150}{16}$

$16$

=150

Then mean of

250

will be,

$\huge{\fbox{\purple{\mathfrak{To\:find\::}}}}$

As every equations are again 50% of the original number, so the given question's answer will be 18 as 100+50=150____[16]

150+50=200_____[17]

200+50=250______[18]