1.

prepare a pictorial edition on the pland and animals life as well as the human life of diferent climatic regions. ​

Answer»

Answer:-CLASS INTERVAL x i Frequency(f i ) f i x i 50-70 60 18 1080 70-90 80 12 960 90-110 100 13 1300 110-130 120 27 3240 130-150 140 8 1120 150-170 160 22 3520 Σf i =100 Σf i x i =11220mean= Σf i Σf i x i = 10011220 =112.20



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