並前往https://academy.snapask.com/zh-hk/post/Frequency-and-Cumulative-frequency-curve-%E9%A0%BB%E6%95%B8%E5%8F%8A%E7%B4%AF%E7%A9%8D%E9%A0%BB%E6%95%B8%E6%9B%B2%E7%B7%9A-3adc09a7c967