Quiz Tutorial 6: Date & Time Data with lubridate

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This quiz complements Tutorial 6: Date & Time Data with lubridate. It is only for your own self-assessment so you are free to submit as many times as you want.

Link to tutorial: https://www.kaggle.com/anichh/tutorial-6-date-time-data-with-lubridate

Q1: Which of the following is a date data? *

1 point

2020-09-15

4:09:24

2020-09-15 4:09:24

none of the above

Q2: What data type is this: 2017-09-19 19:00:00? *

1 point

date

time

datetime

all of the above

Q3: What is different about the outputs' data types of today() and now()? (Select all that apply) *

1 point

today() gives us datetime data

now() gives us datetime data

today() gives us date data

now() gives us date data

Required

Q4: What is the difference between %/% and %%? *

1 point

%% retains integer, %/% retains the remainder

%/% retains integer, %% retains the remainder

%% divides, %/% multiplies

There are no differences

Q5: Using the Friends_visits data frame, which of the following code will give us a new column named "Year_Month" that only has information of the year and month of each friend visit? *

1 point

Friends_visits %>% mutate("Year_Month" = make_datetime(Year, Day))

Friends_visits %>% mutate(Year_Month = make_datetime(Day, Month))

Friends_visits %>% mutate(Year_Month = make_datetime(Year, Month))

none of the above

Q6: What is the difference between %>% and +? (Select all that apply) *

1 point

%>% is pipe

+ is used in ggplot

+ adds more functions to the ggplot blank canvas

%>% can only be used with mutate

Required

Q7: What should the binwidth be if we want to have each data point to represent a separate 2 hour interval? *

1 point

2000

120

7200

Q8: We can use now() to calculate our age as well. *

1 point

True

False

Q9: Which of these functions account for date and time changes throughout the years? (Select all that apply) *

1 point

day

ddays

year

dyears

dweeks

Required

Q10: What happens when we use ddays() or dyears() in days or years that do not experience any special time/date changes? *

1 point

R will give us a warning sign

R will give us an inaccurate output

R will take a very long time to load and eventually crash

Nothing happens, R will function normally

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