New stocks description

In this exercise, you will review plotting multiple graphs on the same graphical window.

The new dataset data containing four new stocks is available in your workspace:

แบบฝึกหัดนี้เป็นส่วนหนึ่งของหลักสูตร

Visualizing Time Series Data in R

Plot all four stocks in the order given in the assignment text on the same graphical window in a 2x2 layout making the character size and the margin size 80% of their normal sizes

ลองทำแบบฝึกหัดนี้โดยเติมโค้ดตัวอย่างนี้ให้สมบูรณ์

# Plot the four stocks on the same graphical window