diff --git a/education/statistics/Probability.md b/education/statistics/Probability.md
index 8b7971a..6cc5be7 100644
--- a/education/statistics/Probability.md
+++ b/education/statistics/Probability.md
@@ -71,4 +71,7 @@ To make a box model, answer the following questions:
 ### Drawing a Box Model
 The number of draws is the amount of events.
 The number of outcomes is the number of tickets
-In the example of a dice roll, you would create tickets 1, 2, 3, 4, 5, 6, and include the number of times you roll the die next to it.
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+In the example of a dice roll, you would create tickets 1, 2, 3, 4, 5, 6, and include the number of times you roll the die next to it.
+
+The *expected value*(EV) for the *sum* of all draws is $num_{draws}*ave_{box}$. 
+The *standard error* for the sum of all draws is the 
\ No newline at end of file