我想問
frequency ploygon
佢俾左個classmark你
要我地計番個class interval
classmark
39.5,41.5,43.5,47.5
甘我就諗住甘計
因為class merk等如lower limit 加upper limit,,so
let x be the smaller number in the class interval
x+[x+(41.5-39.5)]/2=39.5
x=40.5
so the class interval應該系40.5-42.5
旦系個答案系41-42
我唔知點解錯-__-help!!
f.2 maths graph
2008-04-02 4:11 am
回答 (1)
2008-04-02 4:51 am
✔ 最佳答案
CLASS MARK 是指組中點 ..同埋你肯定答案 40.5 既組限 係 41 - 42 ?
佢地組中點同組中點雙差2 但係個組上下限只差1 ?!
收錄日期: 2021-04-13 15:22:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080401000051KK02317