"quantity"exercise: A nonparametric test

下載正保會(huì)計(jì)網(wǎng)校APP 訂閱最新報(bào)考消息

來(lái)源: 正保會(huì)計(jì)網(wǎng)校編輯：小鞠橘桔 2020/11/10 14:06:59　字體：大小

選課中心

多樣班次滿足需求

選課中心

資料專區(qū)

干貨資料助力備考

資料專區(qū)

報(bào)考指南

報(bào)考條件一鍵了解

報(bào)考指南

學(xué)習(xí)是一個(gè)不斷積累的過(guò)程，每天學(xué)習(xí)一點(diǎn)，每天進(jìn)步一點(diǎn)！為了幫助大家更高效地備考2021年CFA考試，正保會(huì)計(jì)網(wǎng)校每日為大家上新CFA習(xí)題供大家練習(xí)。讓網(wǎng)校與您一起高效備考2021年CFA考試，夢(mèng)想成真！

Questions 1:

A parametric test is most likely preferred to a non-parametric test when:

A 、the data are given in ratio or ordinal scale.

B 、defined sets of assumptions are given.

C 、the population is heavily skewed.

Questions 2:

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.

View answer resolution

【Answer to question 1】B

【analysis】

B is correct. A parametric test is more appropriate than a non-parametric one when an analyst is concerned with parameters whose validity depends on a definite set of assumptions—for example, assumptions about the distribution of the population producing the sample.

A is incorrect. A nonparametric test is suitable for this case.

C is incorrect. A nonparametric test is also suitable for this.

【Answer to question 2】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.

成功=時(shí)間+方法，自制力是這個(gè)等式的保障。世上無(wú)天才，高手都是來(lái)自刻苦的練習(xí)。而人們經(jīng)常只看到“牛人”閃耀的成績(jī)，其成績(jī)背后無(wú)比寂寞的勤奮。小編相信，每天都在勤奮練習(xí)，即使是一點(diǎn)點(diǎn)的進(jìn)步，大家一定可以成為人人稱贊的“牛人”。更多CFA考試資訊，點(diǎn)擊了解>