# Conjecture

If we look at data over the precipitation in a city for 29 out
of 30 days and see that it has been raining every single day it
would be a good guess that it will be raining the 30^{th}
day as well. A conjecture is an educated guess that is bases on
known information.

Example

If we are given information about the quantity and formation of section 1, 2 and 3 of stars our conjecture would be as follows.

This method to use a number of examples to arrive at a plausible generalization or prediction could also be called inductive reasoning.

If our conjecture would turn out to be false it is called a counterexample.

**Video lesson:** Make a conjecture for the
following figure

**Proof, Working with logic**