CFA考试备考习题做的如何？今天跟着小编再来练习一下数量和经济学中的考试题，CFA一级考试基础知识掌握是很重要的，复习了这么长时间的知识，考试题也一定能轻松的坐下来吧！
The unemployment rate is best described as the ratio of unemployed to:
A、 labor force.
B 、labor force minus frictionally unemployed.
C、 total population of people who are of working age.
【Answer 】A
【analysis】
A is correct. The unemployment rate is the ratio of unemployed to labor force.
B is incorrect because unemployment rate includes all the labor force.
C is incorrect because unemployment rate is based on the labor force and the working age. The labor force is defined as the number of people who either have a job or are actively looking for a job
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The conditional expected value of a random variable is best described as the:
A .expected value of a random variable given an event or scenario.
B .probability-weighted average of the possible outcomes of the random variable.
C. weighted average of the probabilities of an event given all possible scenarios.
【Answer 】A
【analysis】
A is correct. The conditional expected value of a random variable is the expected value of a random variable given an event or scenario.
B is incorrect because an expected value (not a conditional expected value) is defined as the probability-weighted average of the possible outcomes of the random variable.
C is incorrect because an expected value is not a probability. This answer defines the total probability rule, which is the weighted average of the probabilities of an event given all possible scenarios
通过CFA课程的学习，学员对金融知识有了更深入的了解，备考CFA考试更有信心。备考路上我们一路同行，备考路上的艰辛，我们一起走过，分享你的备考经验与难题，一起解决，有问题可以添加老师微信。
