Show
Home » Data Science » Data Analysis » An analyst runs code to convert string data into a date/time data type that results in the following: “2020-07-10”. Which of the following are examples of code that would lead to this return? Select all that apply. Q:Practice More Questions From: Programming and data analytics R has developed a special representation for dates and times. Dates are represented by the It’s not important to know the internal representation of dates and times in order to use them in R. I just thought those were fun facts. Dates in RWatch a video of this section Dates are represented by the
You can see the internal representation of a
Times in RWatch a video of this section Times are represented by the There are a number of generic functions that work on dates and times to help you extract pieces of dates and/or times.
Times can be coerced from a character string using the
The
You can also use the
Finally, there is the
The weird-looking symbols that start with the Operations on Dates and TimesWatch a video of this section You can use mathematical operations on dates and times. Well, really just + and -. You can do comparisons too (i.e. ==, <=)
The nice thing about the date/time classes is that they keep track of all the annoying things about dates and times, like leap years, leap seconds, daylight savings, and time zones. Here’s an example where a leap year gets involved.
Here’s an example where two different time zones are in play (unless you live in GMT timezone, in which case they will be the same!).
Summary
Which of the following examples can you use in R for Date Time data Select all that apply 1 point?Which of the following examples can you use in R for date/time data? Select all that apply. The examples of types of date/time data that you can use in R are 06:11:13 UTC, 2019-04-16 , and 2018-12-21 16:35:28 UTC . R recognizes the syntax of each of these formats as a date/time data type.
What is the use of date and time function in R?R has developed a special representation for dates and times. Dates are represented by the Date class and times are represented by the POSIXct or the POSIXlt class. Dates are stored internally as the number of days since 1970-01-01 while times are stored internally as the number of seconds since 1970-01-01.
What are the data types in R?R's basic data types are character, numeric, integer, complex, and logical. R's basic data structures include the vector, list, matrix, data frame, and factors.
Which of the following are included in R packages select all that apply 1 point?R packages include reusable R functions, sample datasets, and tests for checking your code. R packages also include documentation about how to use the included functions.
|