A frequent need when engaging in personal science is finding relationships between different variables across a time series, an example could be the question "does eating chocolate improve focus?".
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A frequent need when engaging in personal science is finding relationships between different variables across a time series<ref>Core-Guide_Longitudinal-Data-Analysis_10-05-17.pdf (duke.edu)</ref>, an example could be the question "does eating chocolate improve focus?".
== How does one find relations between variables ==
== How does one find relations between variables ==