【評論主題】8. Stay cool, Mom. I don’t think little Johnny broke the vase on p_________. Please forgive him.

【評論內容】標準差＝變異數開根號

【評論主題】【題組】7. The meeting has to be _________ _______ because our boss is quite busy today.

【評論內容】以射箭為例，信度（是否能射中靶）效度（是否能射中紅心）

【評論主題】7. I don’t want anyone else to know it, so be sure to keep a s________ for me.

【評論內容】ｚ分數＝（原始分數－平均數）／標準差