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MGSC 291 Exam 1 University of South Carolina With Questions And 100% CORRECT ANSWERS
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MGSC 291 Exam 1 University of South Carolina With Questions And 100% CORRECT ANSWERS
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JACKLINEMGSC 291 Exam 1 University of South Carolina With Questions And 100% CORRECT
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Practice questions for this set
, 8/22/24, 12:36 AM
Terms in this set (105)
putting in a dataset data<-c(81,85,93,93,99,76,75,84,78,84,81,82,89,81,96,82,74,70,84,86,80,70,131,75,88,102,115,89,82,79,106)
length(data) tells you how may entries are in your vector
sort(data) puts data smallest to largest
summary(data) returns the five number summary and the sample mean
mean(data) sample mean
sd(data) sample standard deviation
sum(data) adds all the elements of the vector
tells r to create the sequence of numbers from 1 to 100 by 1 (1,2,3...)
seq(1,100,1)
1:100 does the same thing
seq(2,100,2)
(2,4,6...100)
data<-read.table(file.choose(),header=TRUE) calls this dataset into r and you can name it whatever you want
read.cvs
getwd() creates the current working directory and calls in your data too
dim(data) checks dimensions of data
data type the name of the data to see it
data[1:5] calls in the first five rows of the dataset if you are working with a large dataset
head(data) shows the first few rows
data[,1:2] all rows for columns 1 and 2
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