Laserfiche WebLink
<br />Table 5. T-test comparing maximum discharge during periods of scour and periods of no scour. <br />There is a significant difference between the two sample means if the absolute value of the t- <br />statistic is greater than the t-critical value. In this case a significant difference between the two <br />groups exists. <br /> <br />No scour <br /> <br />Scour <br /> <br />Mean maximum discharge during period (m3/s) <br />Variance <br />Observations <br />Pooled variance <br />Hypothesized mean difference <br />df <br />t stat <br /> <br />25 <br />53 <br />14 <br />570 <br />o <br />34 <br />-6.16 <br /> <br />75 <br />890 <br />22 <br /> <br />P(T<=t) two-tail <br />t Critical two-tail <br /> <br />0.000 <br />2.03 <br /> <br />37 <br />