
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
Among the following statements:
① After adding or subtracting the same constant from each data point in a dataset, the variance remains unchanged;
② Given a regression equation $\hat y = 3-5x$, when the variable $x$ increases by one unit, $y$ increases by an average of 5 units;
③ A linear regression equation $\hat y = \overline{b}x + \overline{a}$ must pass through the point ($\overline{x}$, $\overline{y}$);
④ There is a correlation between the points on a curve and their coordinates;
⑤ In a 2×2 contingency table, if it is calculated that $x^2 = 13.079$, then there is a 90% probability that the two variables are related.
The number of incorrect statements is ______.

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