Sir Ronald Fisher was born. An eminent geneticist, Fisher made an unparalleled contribution to modern statistics, experimental design and scientific inference.

Fisher not only pioneered the development of analysis of variance (ANOVA) but also introduced the concept of the null hypothesis in his landmark book 'The Design of Experiments' published in 1935.

See following link for a great experimental design tutorial which is easy to follow and not scary at all!

Experimental Design Tutorial