Required Sample Sizes For Hypothesis Tests
A common problem faced by the statisticians is calculating the sample size required to yield a certain power for a test, given a predetermined Type I error rate α. As follows, this can be estimated by pre-determined tables for certain values, by Mead's resource equation, or, more generally, by the cumulative distribution function:
Read more about this topic: Sample Size Determination
Famous quotes containing the words required, sample, hypothesis and/or tests:
“She, as a veil down to the slender waist,
Her unadorned golden tresses wore
Dishevelled, but in wanton ringlets waved
As the vine curls her tendrils, which implied
Subjection, but required with gentle sway,
And by her yielded, by him best received,
Yielded with coy submission, modest pride,
And sweet, reluctant, amorous delay.
Nor those mysterious parts were then concealed:
Then was not guilty shame: dishonest Shame
Of Nature’s works, Honour dishonourable.”
—John Milton (1608–1674)
“As a rule they will refuse even to sample a foreign dish, they regard such things as garlic and olive oil with disgust, life is unliveable to them unless they have tea and puddings.”
—George Orwell (1903–1950)
“It is more than likely that the brain itself is, in origin and development, only a sort of great clot of genital fluid held in suspense or reserved.... This hypothesis ... would explain the enormous content of the brain as a maker or presenter of images.”
—Ezra Pound (1885–1972)
“What is a novel? I say: an invented story. At the same time a story which, though invented has the power to ring true. True to what? True to life as the reader knows life to be or, it may be, feels life to be. And I mean the adult, the grown-up reader. Such a reader has outgrown fairy tales, and we do not want the fantastic and the impossible. So I say to you that a novel must stand up to the adult tests of reality.”
—Elizabeth Bowen (1899–1973)