Answered: Suppose you have a tiny data frame…

Suppose you have a tiny data frame named example_df as shown below. Which line of code will result in a data frame with two rows? (In case it's not clear, A and B are the variable names.)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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External Style Sheet

A separate style sheet file attached to an HTML web page is known as an external style sheet. The external style sheet can be used to declare all of the styles that will be used on a website. External style sheets are a significant tool for a web designer.

Question

Suppose you have a tiny data frame named
example_df as shown below. Which line of code
will result in a data frame with two rows? (In
case it's not clear, A and B are the variable
names.)
B
A
30
ΝΑ
31
O example_df |> na.omit()
example_df |> drop_na(B)
Hammonton
Sparta
ΝΑ

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