期望值 (qī wàng zhí) — expected value (in probability and statistics)

Definition

Examples

• 计算这个问题的期望值需要知道所有可能的结果。
  Jì suàn zhè ge wèn tí de qī wàng zhí xū yào zhī dào suǒ yǒu kě néng de jié guǒ.
  To calculate the expected value of this problem, you need to know all possible outcomes.
• 在投资中，期望值是一个重要的概念。
  Zài tóu zī zhōng, qī wàng zhí shì yí gè zhòng yào de gài niàn.
  In investment, expected value is an important concept.
• 我们根据期望值来选择最好的方案。
  Wǒ men gēn jù qī wàng zhí lái xuǎn zé zuì hǎo de fāng àn.
  We choose the best plan based on expected value.