In HW$1,$ you need to remove all data objects first and then load the RData file 'Beginning.RData' under your current working directory.

Please refer to the R file for Chapter $2$ posted at D$2$L and the following commands to accomplish this.

rm$($list$=$ls$())$

load$("$Beginning$.$RData"$)$

Among the loaded data objects, how many of them have the name that contain characters "data"?

Save your R commands to a R file named hw$1.$R and submit it to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$11$

B$)$

$7$

C$)$

$8$

D$)$

none of above

Hide question $1$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is INCORRECT.

Question $22/2$ points

Among the loaded data objects, how many of them have the name that contain characters $"$d$**$a$",$ where $*$ can be any letters or symbols?

Save your R commands to a R file named hw$1.$R and submit it to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$11$

B$)$

$12$

C$)$

$13$

D$)$

none of above

Hide question $2$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is CORRECT.

Question $32/2$ points

Among the names of loaded data objects, how many of them begin with "data"?

Save your R commands to a R file named hw$1.$R and submit it to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$7$

B$)$

$12$

C$)$

$11$

D$)$

none of above

Hide question $3$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is CORRECT.

Question $40/2$ points

Among the names of loaded data objects, how many of them end with "data"?

Save your R commands to a R file named hw$1.$R and submit it to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$0$

B$)$

$1$

C$)$

$2$

D$)$

none of above

Hide question $4$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is INCORRECT.

Question $50/2$ points

Among the names of loaded data objects, how many of them end with either $"$d$"$ or $"$a$"?$

Save your R commands to a R file named hw$1.$R and submit it to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$15$

B$)$

$16$

C$)$

$17$

D$)$

$18$

Hide question $5$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is INCORRECT.

Question $62/2$ points

If we use as$.$integer$()$ command to convert the object: exp, what is its second element after the conversion?

Save your R commands to a R file named hw$1.$R and submit it to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$20$

B$)$

$29$

C$)$

$30$

D$)$

none of above

Hide question $6$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is CORRECT.

Question $72/2$ points

What is the data structure of the object: survey?

Save your R commands to a R file named hw$1.$R and submit it to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

matrix

B$)$

data frame

C$)$

list

D$)$

none of above

Hide question $7$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is CORRECT.

Question $82/2$ points

Save the objects: data$5,$ data$6,$ data$7$ and fcol into a $.$RData file named hw$1\_$data$567.$RData.

What is the size of the file?

Save your R commands to a R file named hw$1.$R$,$ submit hw$1.$R and hw$1\_$data$567.$RData to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$175$bytes

B$)$

$2$KB

C$)$

$2\mathrm{.}2$KB

D$)$

none of above

Hide question $8$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is CORRECT.

Question $90/4$ points

Save the object: bees into a csv file named hw$1\_$bees.csv$.$

What is the element in the second first row and second first column?

Save your R commands to a R file named hw$1.$R$,$ submit hw$1.$R and hw$1\_$bees.csv to the dropbox named: HW$1\_$dropbox

Question options:

A$)$

$10$

B$)$

$3$

C$)$

$1$

D$)$

none of above

Hide question $9$ feedback

see my slides in Chapters $1$ and $2$ in the textbook

Your answer is INCORRECT.