题目
STAT0004_25-26 Monday Dec 8th ICA - ALL GROUPS (12:10-12:50)
多项选择题
Select which of the following statements are (is) TRUE
选项
A.a. R always has a working directory, even immediately after it has been started.
B.b. I have a 2-dimensional data frame called MyData with columns Name, Surname (listed in that order) and location. MyData$Name and MyData[,1] are equivalent.
C.c. If I want to generate samples from a Poisson distribution with mean [math: μ], I must select an integer value for [math: μ] because the Poisson distribution is discrete.
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标准答案
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思路分析
Reviewing the statements in this question requires evaluating each option on its own merits before deciding which are true.
Option a: 'R always has a working directory, even immediately after it has been started.' In R, a working directory is established when the session starts and remains the current working directory unless you change it with setwd(). Therefore, it is indeed true t......Login to view full explanation登录即可查看完整答案
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