Question

4.   The mean of 10, 15, x, 5, 15 is 15. What is the value of x?​

Answer 1

Answer:

30

Step-by-step explanation:

mean = sum of alll observations/total observations

15=(45+x)/5. ( x is also an observation

75=45+x

x=30

Answer 2

As we know that :

Mean = (Sum of the Observations)/(Number of the Observations)

Here, sum of the Observations :

10+15+x+5+15 = 45+x

Number of observations = 5 and Mean = 15

According to the question :

$15 = \frac{45 + x}{5} \\ \\ = > 75 = 45 + x \\ \\ = > x = 75 - 45 \\ \\ = > x = 30$

So, the value of x will be 30

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