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The sensitivity at line A is 100% because at that point there are zero false negatives, meaning that all the negative test results are true negatives. When moving to the right, the opposite applies, the specificity increases until it reaches the B line and becomes 100% and the sensitivity decreases.
Boxplot (with an interquartile range) and a probability density function (pdf) of a Normal N(0,σ 2) Population. In descriptive statistics, the interquartile range (IQR) is a measure of statistical dispersion, which is the spread of the data. [1] The IQR may also be called the midspread, middle 50%, fourth spread, or H‑spread.
However, the earliest known book printed at regular size is the Diamond Sutra, made during the Tang dynasty (618–907), a 5.18 m (17.0 ft) long scroll, which bears the date AD 868. [16] Joseph Needham and Tsien Tsuen-hsuin write that the cutting and printing techniques used for the delicate calligraphy of the Diamond Sutra book are much more ...