Question

Let the sample mean of a set of 20 data points be 30. If it is discovered that a data point naming sales was incorrectly entered as 15. what should be the revised value of the sample mean?​

Answer 1

Answer:

30.5

Step-by-step explanation:

Sample Mean of 20 data points = 30

Total data points = 20 * 30 = 600

If it is discovered that a data point 25 was incorrectly entered as 15.

New data points = 600 - 15 + 25 = 610

Revised Mean = 610 / 20 ⇒ 30.5

Answer 2

Answer:

30.5

Step-by-step explanation: