搜尋結果
As one moves to the left of the black dotted line, the sensitivity increases, reaching its maximum value of 100% at line A, and the specificity decreases. 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.
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Chi-squared tests often refers to tests for which the distribution of the test statistic approaches the χ2 distribution asymptotically, meaning that the sampling distribution (if the null hypothesis is true) of the test statistic approximates a chi-squared distribution more and more closely as sample sizes increase.
They may be used to model the weather, ocean currents, water flow in a pipe and air flow around a wing. The Navier–Stokes equations, in their full and simplified forms, help with the design of aircraft and cars, the study of blood flow, the design of power stations, the analysis of pollution, and many other problems.
Poisson Distribution. Probability mass function. The horizontal axis is the index k, the number of occurrences. λ is the expected rate of occurrences. The vertical axis is the probability of k occurrences given λ. The function is defined only at integer values of k; the connecting lines are only guides for the eye.
This is a list of U.S. states and territories by violent crime rate. It is typically expressed in units of incidents per 100,000 individuals per year; thus, a violent crime rate of 300 (per 100,000 inhabitants) in a population of 100,000 would mean 300 incidents of violent crime per year in that entire population, or 0.3% out of the ...
The Kama Sutra ( / ˈkɑːmə ˈsuːtrə /; Sanskrit: कामसूत्र, pronunciation ⓘ, Kāma-sūtra; lit. 'Principles of Love') is an ancient Indian Hindu Sanskrit text [1] [2] on sexuality, eroticism and emotional fulfillment. [3] [4] [5] Attributed to Vātsyāyana, [6] the Kamasutra is neither exclusively nor ...
