Which one of the following symbols is used by ‘as’ operator?

1.Which one of the following arguments of read.table() function contain logical values?

 

(a) header (b) sep

(c) filename (d) None of the above

2. Which one of the following functions loads a package into the R workspace?

(a) load() (b) library()

(c) data() (d) install()

3. Which one of the following functions lists all the available datasets of a loaded package into

the R workspace?

(a) library() (b) data(datasetname)

(c) data() (d) install()

4. Which one of the following packages reads finance data from Yahoo finance?

(a) Rcurl (b) XML

(c) WDI (d) Quantmod

5. Which one of the following package reads all World Bank data?

(a) RCurl (b) XML

(c) WDI (d) Quantmod

6. Which one of the following packages is used for accessing web data?

(a) ScrapeR (b) Stat

(c) RSQLite (d) Matrix

7. Which one of the following commands converts a data frame into a matrix?

(a) as.Matrix(data frame) (b) .matrix(data frame)

(c) as.numeric(data frame) (d) None of the above

8. Which one of the following symbols is used by ‘as’ operator?

(a) * (b) .

(c) % (d) &

 

find the cost of your paper

Suggest a modification of the binary search algorithm that emulates this strategy for a list of names.

1. Suppose that a list contains the values 20 44 48 55 62 66 74 88 93 99 at index positions 0 through 9. Trace the values of the variables….

Explain why insertion sort works well on partially sorted lists.

1. Which configuration of data in a list causes the smallest number of exchanges in a selection sort? Which configuration of data causes the largest number of exchanges? 2. Explain….

Draw a class diagram that shows the relationships among the classes in this new version of the system

Jack decides to rework the banking system, which already includes the classes BankView, Bank, SavingsAccount, and RestrictedSavingsAccount. He wants to add another class for checking accounts. He sees that savings….