deletions | additions       diff --git a/layout.md b/layout.md  index 403cb6e..c05e7aa 100644  --- a/layout.md  +++ b/layout.md 
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descriptive statistics.tex  delay and span.tex  regression.tex  Let_P_represent_the.tex  equation_Cbeta_1Tbeta_1Pvarepsilon.tex  equation_Cbeta_1Abeta_2Pvarepsilon.tex  equation_Cbeta_1Tbeta_2Abeta_3Pvarepsilon.tex