3. Calculate the flow nozzle discharge coefficient for each try, C=\frac{Q_{\text {acthal }}}{Q_{\text {theoritical }}}=\frac{Q_{\text {actual }}}{A_{2} \sqrt{\frac{2 g h}{\left(1-\beta^{4}\right)}} \text { and }} write it as an additional column.

Calculate the mean and deviation for these values. And,Compare the mean value with the discharge coefficient estimated by the graph.