The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is:	Choose the correct choice from the following:
A) 36.5 B) 21.4 C) 19.5 D) 18.2 E) 17.9
Explanation:   Correct sum = (36 * 50 + 48 - 23)= 
<gadget id="calculator">(36 * 50 + 48 - 23)</gadget>
<output>1_825</output>
1825.   Correct mean= 1825/50= 
<gadget id="calculator">1825/50</gadget>
<output>73/2 = around 36.5</output>
36.5   Option 36.5
<result>A</result>
The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is: