Look at the data below:

P1 P2 P3 P4 P5 P6 P7 P8 P9 P10

Pre 5.3 16.2 2.4 32.2 6.6 -0.2 1.7 -11.2 -34.3 -0.8

Post 16.5 -15.6 183.4 -8.7 54.4 12.9 -39.8 -8.2 -38.5 -160.8

The data are obtained from a within-subject study. Is there any statistical significance between the pre- and post-treatment? What is the effect size? (Do not use a t-test. Instead, use a nonparametric test.)

When completing the calculation, you should show your work.

3. Research McNemar's Test and come up with a scenario that uses the test. Do not forget to cite the source for McNemar's Test.

4. Why is it a good idea to use data visualization alongside a test for normality like Jarque-Bera or Shapiro-Wilk test?