If the mean of weight of students in a class of weight 38, 50, 70, 88 and 110 is 71.5 kg, what is the mean of the class if student of weight 50 kg left the class i.e state whether what will happen to original mean value ?  Choose the correct choice from the following options
A) increase  B) decrease  C) remains unchanged  D) can't say  E) none of the above
Given mean of class = M1 = 71.5 kg   Mean = (Sum of all weights in class)/(no. students)   M2 = (38+70+88+110)/(4)= 
<gadget id="calculator">(38+70+88+110)/(4)</gadget>
<output>153/2 = around 76.5</output>
76.5 kg   since, M1 &lt; M2   increasenswer=increase
<result>A</result>
If the mean of weight of students in a class of weight 38, 50, 70, 88 and 110 is 71.5 kg, what is the mean of the class if student of weight 50 kg left the class i.e state whether what will happen to original mean value ?