If n1 andn2values are being smaller than 20 separately, this situation is accepted as small sample size. The r
value, which denotes the test statistics of WW runs rest is equal to the number of runs through whole data set. To
find the value of test statistics, two samples are combined and then observations are align from small to large. In
addition, it is also denoted that which observation comes from which sample. If the calculated value of r, in terms of
n1 and n2values, is equal or smaller than the tabulated r value which denotes lower and upper critical values of WW
runs test’s r value, then H0hypothesis is rejected at the α significance level (Daniel, 1990).