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When an object is thrown out, it experiences the gravitational pull of the Earth and falls. Such motion is known as projectile motion. This resource will demonstrate experimental videos…

物體被拋出後，會受到地球重力影響而向下墜，此運動稱為拋體運動。本資源展示以高速攝影機拍攝的實驗短片，解釋拋體運動的原理。

主持介紹在統計學上，集中趨勢是反映一組數據裏面，各種數據所集聚的位置；而離差就是反映一組數據的分散程度。量度離差的方法包括分佈域、四分位數間距、框線圖和標準差。

In statistics, the degree of distribution of a set of data is called dispersion. Also, the central tendency is to reflect the location of concentration of the various data in a set of data. Methods…

1. 探究和推測不同情況對數據的集中趨勢所產生的影響 2. 探究不同情況對數據的離差

Explore the change of data on the effect of the central tendency and dispersion.