<p>Cartoon Guide to Statistics</p>
<p><a href="https://stats.stackexchange.com/questions/161752/when-is-a-single-data-point-enough-to-be-considered-a-trend-in-the-data">When is a single data point enough to be considered a trend in the data?</a></p>
<p><a href="https://stats.stackexchange.com/questions/83186/can-you-do-statistics-with-4-data-points">Can you do statistics with 4 data points?</a></p>
<p><a href="https://stats.stackexchange.com/questions/24280/can-i-fit-a-mixed-model-with-subjects-that-only-have-1-observation">Can I fit a mixed model with subjects that only have 1 observation?</a></p>

William