By squaring these differences, we end up with a standardized measure of deviation from the mean regardless of whether the values are more or less than the mean. Let's remind ourselves of the equation ...

For a quadratic equation of the form \(y = k{(x - a)^2} + b\), the following diagram shows the main properties: If k > 0, the vertex is a minimum turning point If k < 0, the vertex is a maximum ...