The mean of 50 observations is 200. But later he found that there is decrements of 15 from each observations. what is the the updated mean is ?
Choices
A) 170  B) 185  C) 190  D) 196  E) 200
185   Answer is 185
<result>B</result>
The mean of 50 observations is 200. But later he found that there is decrements of 15 from each observations. what is the the updated mean is ?