
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
When conducting a linear regression analysis on two variables $x$ and $y$, the following steps are involved:  
(1) Predict using the regression equation; (2) Collect data $(x_i, y_i)$, where $i=1, 2, \ldots, n$;  
(3) Derive the linear regression equation; (4) Plot the scatter diagram based on the collected data.  
The correct sequence of operations is.

Present the answer in LaTex format: \boxed{Your answer}
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