please find the mode with steps. (this is really important so dont fish for points, answer if you know)
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Answer: Mode, Z=l+[fi-f0/2fi-f0-f2]*h
Lower limit, l=40
frequency of the model class, fi=13
frequency before model class, f0=11
frequency after model class, f2=7
length of the model class, h=19
Z=40+[13-11/2*13-11-7]*19
Z=40+[2/8]*19
z=40+19/4
Z=160+19/4
Z=179/4
or
Z= 44.102
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