| id | name | age |
|---|---|---|
| 1 | Alice | 19 |
| 2 | Bob | 21 |
| 4 | Olivia | 20 |
Classwork 9
Joining Two Related Tables in R
Consider the two related data.frames, df_1 and df_2:
df_1
df_2
| id | major |
|---|---|
| 1 | Economics |
| 2 | Business Administration |
| 3 | Data Analytics |
Which of the following R code correctly join the two related data.frames, df_1 and df_2, to produce the resulting data.frame shown below?
| id | major | name | age |
|---|---|---|---|
| 1 | Economics | Alice | 19 |
| 2 | Business Administration | Bob | 21 |
| 3 | Data Analytics | NA | NA |
df_1 |> left_join(df_2)df_2 |> left_join(df_1)- both a and b
Discussion
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