How do you calculate the average titre value from titration results?

A titration table is used to record the burette readings and calculate the volume of titrant used.

$$\begin{array}{|c|c|c|c|} \hline \textbf{Titration Number} & \textbf{Initial Burette Reading} \ (\text{cm}^3) & \textbf{Final Burette Reading} \ (\text{cm}^3) & \textbf{Volume of A used} \ (\text{cm}^3) \\ \hline \text{Rough} & & & \\ \hline 1 & & & \\ \hline 2 & & & \\ \hline 3 & & & \\ \hline \end{array}$$

To calculate the average volume of A used, select the concordant titre values (those that are within a close range, typically $\pm 0.1 \text{ cm}^3$ or $\pm 0.2 \text{ cm}^3$ of each other). Sum these concordant values and divide by the number of values.

For example, if Titration 1, 2, and 3 yielded volumes $V_1, V_2, V_3$ respectively, and $V_1$ and $V_2$ were concordant:

$$\text{Average Volume of A used} = \frac{V_1 + V_2}{2}$$

Since no experimental data (burette readings) is provided, a numerical average volume cannot be calculated.