Question

if 7 is the mean of 5, 3, 0.5, 4.5, B, 8.5, 9.5 find the value of B​

Answer 1

Answer:

The required value of B = 18

Step-by-step explanation:

The data values are given to be : 5, 3, 0.5, 4.5, B, 8.5, 9.5

We need to find the value of B

Now, The mean of the given above data = 7

Now, sum of all the observations = 5 + 3 + 0.5 + 4.5 + B + 8.5 + 9.5

                                                       = 31 + B

Also, Mean of the data values is given by the formula :

Mean = (Sum of all the observations) / ( Total number of observations)

⇒ 7 = (31 + B)/7

⇒ 31 + B = 49

⇒ B = 49 - 31

⇒ B = 18

Thus, The required value of B = 18