3 years ago

The mean of 100 numerical observations is 51.28 what is the value of the sum of all 100 numbers

1 answer:

8 0

$\dfrac{x_1+x_2+\cdots+x_{99}+x_{100}}{100}=51.28$

which means the sum of the 100 numbers must be

$x_1+x_2+\cdots+x_{99}+x_{100}=100\times51.28=5128$

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SohCahToa

Sin=oposite side/hyptoonuse
Cos=adjacent side/hypotonuse
Tan=oposite side/hypotonuse

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adjacent side is the side touching the angle that isn't the hypotonuse
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