Following is the height of 10 students. Calculate A.M through Direct Method and Short-Cut methods:
Students A B C D E F G H I J
Height 155 153 168 160 162 166 164 180 157 165

Dear student, 
A.M. using direct method is calculated as follows:
A.M. = XN=155+153+168+160+162+166+164+180+157+16510=163010=163

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