if the weight of a group of people are divided into 5 classes with the class marks of 44.5kg,54.5kg,64.5kg,74.5kg and 84.5kg ,
(A)find the 3rd calss limit
點解&點做
math f.2
2008-12-20 2:03 am
回答 (2)
2008-12-20 7:39 am
✔ 最佳答案
Below link is the answer and the explanation...http://i404.photobucket.com/albums/pp124/mr_gary_cheung/P1060468.jpg
I hope it can help you...
參考: myself... 勿抄!
2008-12-24 11:19 pm
class mark of the 3rd class = 64.5
Difference between each class = 10
Therefore, lower limit = 64.5 - (10/2) = 59.5
upper limit = 64.5 + (10/2) = 69.5
The 3rd class limit is from 59.5 to 69.5.
Difference between each class = 10
Therefore, lower limit = 64.5 - (10/2) = 59.5
upper limit = 64.5 + (10/2) = 69.5
The 3rd class limit is from 59.5 to 69.5.
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