prop.test(c(13, 8), c(152, 152)): 2-sample test for equality of proportions with continuity correction data: c(13, 8) out of c(152, 152) X-squared = 0.8184,

prop.test(c(13, 8), c(152, 152)): 2-sample test for equality of proportions with continuity correction data: c(13, 8) out of c(152, 152) X-squared = 0.8184, df = 1, p-value = 0.3656 alternative hypothesis: two.sided 95 percent confidence interval: -0.03057673 0.09636621 So there's no evidence that there actually was a statistically significant change in usage of google's cloud.