For Each (Loops)

This exercise uses foreach to loop over lists of variables.

1. Use foreach to run a one-way tabulation (tab) for the following shock indicator variables:
   • crop_shock
   • pests_shock
   • rain_shock
   • drought_shock
   • flood_shock

How many plots experienced each type of shock?

1. Modify the loop so that it also calculates the share of plots that experienced the shock (i.e., where the shock variable == 1). For each shock, use sum, if, and r(mean) to store that share in a local macro named `share_`shock'` and display the result as:

* Print as percent with one decimal place
  display   "About " %4.1f (100*`share_`shock'') "% of plots experienced a `shock'."

What share of plots experienced each type of shock?