Question

Mean of 10 observation is 7.5 if 2.5 is deduced from each observation and then it multiplied by 2.Mean of new observation​

Answer 1

Step-by-step explanation:

initial mean =7.5

if 2.5 deducted from each observation then mean will become 5

if each observation is multipled by 2 then mean will become 10

so mean of new observation =10

Answer 2

Answer:

The correct answer i.e. the Mean of new observation is 10.

Step-by-step explanation:

The formula for mean of an observation is :

$\frac{sum \: of \: all \: the \: observations}{total \: number \: of \: observations }$

Note : If x is deducted from each observation, the mean also decreases by x.

Follow the steps as per the question to find the final mean:

1.) If 2.5 if deduced from each observation,

The mean becomes,

7.5-2.5 = 5

2.) The resultant mean is then multiplied by 2,

As a result, the new mean is,

5×2 = 10

The final mean is 10.

To know more about Mean, click on the link given below:

https://brainly.in/question/8230159

To know more about Median, click on the link below:

https://brainly.in/question/7805899

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