Question

The mean of 19 observations is 4 if one more observation 24 is added to the data find the new mean

Answer 1

Answer:

4.5 is the new mean of the observation

Answer 2

The new mean is 5

Step-by-step explanation:

$Mean = \frac{\text{Sum of all observations}}{\text{No. of observations}}$

We are given that The mean of 19 observations is 4

$4=\frac{\text{Sum of all obsrvations}}{19}$

$19 \times 4 =\text{Sum of all observations}$

76=Sum of observations

Now one more observation 24 is added to the data

New sum = 76+24 = 100

No. of observations = 19+1 =20

So, new mean = $\frac{100}{20}=5$

Hence The new mean is 5

#Learn more:

The mean of 10 observations is 50 if a new number is added the new mean becomes 60 find the new number

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