[coining The Phrase "test Of Significance"] Critical

No Isolated Experiment, However Significant In Itself, Can Suffice For The Experimental Demonstration Of Any Natural Phenomenon; For The "one Chance In A Million" Will Undoubtedly Occur, With No Less And No More Than Its Appropriate Frequency, However Surprised We May Be That It Should Occur To Us.

Fairly Large Print Is A Real Antidote To Stiff Reading.

We Can Set No Limit To Human Potentialities; All That Is Best In Man Can Be Bettered; It Is Not A Question Of Producing A Highly Efficient Machine, ... But Of Quickening All The Distinctly Human Features, All That Is Best In Man, All The Different Qualities, Some Obvious, Some Infinitely Subtle, Which We Recognize As Humanly Excellent.

[coining The Phrase "test Of Significance"] Critical Tests Of This Kind May Be Called Tests Of Significance, And When Such Tests Are Available We May Discover Whether A Second Sample Is Or Is Not Significantly Different From The First.

[coining Phrase "null Hypothesis"] In Relation To Any Experiment We May Speak Of This Hypothesis As The "null Hypothesis," And It Should Be Noted That The Null Hypothesis Is Never Proved Or Established, But Is Possibly Disproved, In The Course Of Experimentation. Every Experiment May Be Said To Exist Only In Order To Give The Facts A Chance Of Disproving The Null Hypothesis.