We send out daily e-mails to customers suggesting products at different times: `09:30`, `12:00`, `19:30`. A customer can either click on a product or not. I want to know the following: *Is there a significant difference in clicks depending on at what time an email is sent to the customer?* The hypothesis is set up as follows: \begin{align} \mathcal{H}_N &= \textrm{There is no difference in number of clicks between time groups} \\ \mathcal{H}_A &= \textrm{There is a difference in number of clicks between time groups} \end{align} The data set I have is the following > summary(df) Click Time 0:277551 0930:93799 1:3236 1200:93446 1930:93542 Where `0=no click` and `1=click`. My first guess was a one-way ANOVA but then I have to make the assumption that my dependent variable `Click` is continous and normally distributed, which is not the case. What would be an appropriate test for the scenario I've described? If I only had two timegroups I'd use test of two proportions as suggested [here][1]. Is there any test of 3 proportions? **EDIT 1:** Data set as per Ben Bolkers suggestion. But here I have only 3 rows and not 6 as he suggests. I'm misunderstanding what he means. [![enter image description here][2]][2] **EDIT 2:** Fitting glm as dipetkov suggested gives the following result, using the raw data set in the form Click Time ----------- 0 0930 1 0930 1 1200 0 0930 0 1930 ... Call: glm(formula = Click ~ Time - 1, family = binomial, data = df) Deviance Residuals: Min 1Q Median 3Q Max -0.1595 -0.1595 -0.1520 -0.1450 3.0200 Coefficients: Estimate Std. Error z value Pr(>|z|) Time0930 -4.54982 0.03210 -141.8 <2e-16 *** Time1200 -4.45538 0.03070 -145.1 <2e-16 *** Time1930 -4.35849 0.02927 -148.9 <2e-16 *** --- Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 (Dispersion parameter for binomial family taken to be 1) Null deviance: 389253 on 280787 degrees of freedom Residual deviance: 35301 on 280784 degrees of freedom AIC: 35307 Number of Fisher Scoring iterations: 7 All the groups seem to be significant. How do I find which one of them leads to most clicks? [1]: https://stats.stackexchange.com/questions/435729/statistical-significance-of-a-b-test-for-binary-outcome [2]: https://i.sstatic.net/1iICk.png