Each page has exactly one h1.
(Except this sample page has two.)

bold, italic, underlined monospaced, combined

sub₂₃ super ⁴⁷⁵ deleted

line break
two backslashes at eol
or two backslashes+space
at eol

Google

Link to Regression Analysis wiki page.

Link to Data Fitting for Regression Analysis section.

Every heading creates a section.

For example, here are four (x,y) data points which appear roughly in the shape of a straight line.

Insert the CLEAR directive to realign the following heading.

<insert svg image here>

<insert youtube file here>

Write the linear equation inline as a function of $x$. $$f(x) = ax + b$$ This is the predictor function. $f(x)$ gives the predicted value of $y$.

• This is a list
  • The second item
• You may have different levels
• Another item

1. This is an ordered list
2. The second item
   1. You may have different levels
3. Another item

$ code block
two space indent

or

$ ls -al # html syntax