2. What is Standard Deviation? Given the data 12 14 16 18 and 20 ounces, find the mean. Find the distance each value is to the mean. What are the
distances squared? What is the sum of the distances squared? What is the
mean of the distances squared? What is the square root? State the
standard deviation for this set of data.

Select the correct answer. given: ∆abc with prove: statement reason 1. given 2. ∠cab ≅ ∠edb ∠acb ≅ ∠deb if two parallel lines are cut by a transversal, the corresponding angles are congruent. 3. ∆abc ~ ∆dbe aa criterion for similarity 4. corresponding sides of similar triangles are proportional. 5. ab = ad + db cb = ce + eb segment addition 6. substitution property of equality 7. division 8. subtraction property of equality what is the missing statement in the proof? scroll down to see the entire proof.