The correct statement from the provided options about the average rate of change over the interval \([a,b]\) for the function \(f(x)\) is:
The average rate of change can be calculated using the formula \(\frac{f(b) - f(a)}{b - a}\).
This formula correctly represents the average rate of change of the function \(f(x)\) over the interval \([a, b]\). It measures how much the function value changes (the difference \(f(b) - f(a)\)) relative to the change in the input values (the difference \(b - a\)).
The other statements contain inaccuracies or repetitions and are not correct representations of the average rate of change.