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Mean =1288/21= 61.33
edian= size of (n+1)/2) th term
Median =size of (21+1/2)th term
Median=size of 11th Term Median number of pupils per class = 63 Mode Highest frequency =Fm=8 Occurs against the X value =63 Hence Mode =X=63 The mode is obviously 63 and the company should be quite satisfied that a 68 seater is the correct-size for this particular route.
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