Que.Which of the following is a trait of tidy data?
|
| a. each variable in one column |
| b. each observation in different row |
| c. one table for each kind of variable |
| d. none of the mentioned |
each observation in different row
Que.Which of the following package is used for tidy data?
|
| a. tidyr |
| b. souryr |
| c. NumPy |
| d. all of the mentioned |
Que.Point out the wrong statement.
|
| a. Tidy datasets are all alike but every messy dataset is messy in its own way |
| b. Most statistical datasets are data frames made up of rows and columns |
| c. Tidy datasets provide a standardized way to link the structure of a dataset with its semantics |
| d. None of the mentioned |
Que.Which of the following process involves structuring datasets to facilitate analysis?
|
| a. Data tidying |
| b. Data mining |
| c. Data booting |
| d. All of the mentioned |
Que.Strange binary file generated from machines is an example of tidy data.
|
| a. True |
| b. False |
| c. May be True or False |
| d. Can’t say |
Que.Which of the following is the most common problem with messy data?
|
| a. Column headers are values |
| b. Variables are stored in both rows and columns |
| c. A single observational unit is stored in multiple tables |
| d. All of the mentioned |
Que.tidyr is a reframing of _______ designed to accompany the tidy data framework.
|
| a. reshape5 |
| b. dplyr |
| c. reshape2 |
| d. all of the mentioned |
Que.Raw data in the real-world is tidy and properly formatted.
|
| a. True |
| b. False |
| c. May be True or False |
| d. Can’t say |
Que.Which of the following function is used for loading flat files?
|
| a. read.data |
| b. read.sheet |
| c. read.table |
| d. none of the mentioned |
Que.Point out the correct statement.
|
| a. XLConnect package has more options for manipulating access files |
| b. XLConnect vignette package can also be used for manipulating excel files |
| c. write.xlsx write out an excel file with different argument |
| d. None of the mentioned |
write.xlsx write out an excel file with different argument