span id="beta1STD">__</span>. It is defined mathematically as the following:</p>
                            $$\hat{B_{1}} = \dfrac{S_{xy}}{S_{xx}}$$
                        </div>
                        <div id="sse" class="explanation" style="display:none">
                            <p>\(SSE\) is an abbreviation for the sum of squared errors which is the sum of the square residuals. It is defined mathematically as the following:</p>
                            $$SSE = \sum_{i=1}^{n}\Big{(}y_{i} - \big{