Cumulative Frequency Polygon 累積頻數多邊形的應用

Demonstrate the use of cumulative frequency polygons.
展示累積頻數多邊形的應用。

English version: http://www.geogebratube.org/material/show/id/5419 (Download GeoGebra file)
中文版：http://www.geogebratube.org/material/show/id/15485 (Download GeoGebra file)

Answer the following questions using the applet.
(a) If the passing mark is 50, how many students fail in the test?
(b) If 50% of students pass the test what is the passing mark?
What is the passing mark if 70% of students pass the test?
(c) A prize will be given to the students who get 75 marks or above. How many students get the prize?
(d) If 8 prizes are to be given, what is the mark above or equal to which a prize would be given?
(e) How many students have marks between 55 and 75?



(a) 若測驗的合格分數為50，有多少名學生不合格？
(b) 若有50%的學生合格，合格分數應為多少？
　 若要有70% 的學生合格，合格分數應為多少？
(c) 若老師派發禮物給75分或以上的學生，有多少學生會得到禮物？
(d) 若老師要派發 8 份禮物，多少分或以上的學生可以得到禮物？
(e) 有多少學生的分數介乎 55 分 至 75 分之間？
輸入其他數據並製作其累積頻數多邊形。



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