Question 1083114
28,34===35,34 W
29,32===35,34 W
29,32===36,33 W
30,35===37,33 W
31,34===38,34 W
32,32===38,32 W
32,33===40,33 W
33,33===40,34 W
34,32===41,34 W
34,35===41,34 W

I used the Cox-Stuart test, which pairs the first half and the second half.  If there were no difference between the initial value, there should be the same number of improvements vs. worsening.  There is a clear difference between the two groups relative to the initial number of strikes.  This is also good for comparing temperatures, for example, so 1901 is compared to 1951, 1920 to 1970, and so forth.