planetqhe and the IB Random Behaviour Experimental vs Theoretical Compound Events I Compound Events II Expectations and Distributions Distributions and Hypotheses Probability in the real world Home Contact
Essential Questions Le Choise de Roi Families Galton Board Radioactive Decay Chevalier de Mere 1 Dividing Dice    

Investigation

In this Galton Board experiment let LEFT stand for girl and RIGHT for boy. 

(1) What do the totals in each of the  columns represent? What size of families are these? What do you notice about the middle column(s)? Can you explain what you notice?

(2) Change the rows of pins to 2.

What size of families are these? What do you notice about the middle column? Can you explain what you notice?

(3) Repeat for 3,4,5,6 rows.

(4) Which of the Families spreadsheet experiments does the Board relate to? How? Does the board demonstrate equally likely outcomes or not? Why? How?