a) Check to see if diffmasked any objects.
b) If so what type of object was it?
c) What package did it belong to?
我的解答:首先读取 bacteria <- read.csv("C:\\Users\\Administrator\\Desktop\\bacteria.csv")
a) attach(bacteria)
运行结果如下:
The following objects are masked from bacteria (pos = 3):
control, treated
b) mode(control);mode(treated)
运行结果如下:
[1] "numeric"
[1] "numeric"
c) 不知该如何操作,另外前两个问题的解答是否正确,还请各位大侠指导下,谢谢啊