數據轉變對離差度量的影響 | How Data Change Affects Measures of Dispersion

[@IDENTITYHK]

IDENTITY 網站：
project-identity.hk
影片內容：
00:21 - 每項數據加一個常數或乘以一個常數 | adding or multiplying a common constant to each datum
05:10 - 新增或刪減一項數據 | insertion or deletion of a datum
08:23 - 例子 | example
Playlist：
HKDSE Maths | 離差的度量 | Measures of Dispersion
ua-cam.com/play/PL1Pv0-rhcQx5_Uxc-BUXhq6b3Qs0s6PR9.html

[@jjlol-x8l]

is that 13:47 have a mistake ?the sd change may use the new mean(after adjustment)=46.14 to compare with 32?? i am not sure about that

[@user-cc9sm9xt8t]

he used 32.68 compare with 32