Downloaded from https://www.everyspec.com AMCP 7064" CHAPTER 2 STATISTICAL EVALUATION OF RELIARILITY TESTS, DESIGN AND DEVELOPMENT LIST OF SYMBOLS B " function of in lognormal I - an integer in Example No. distrbution, see par. 2-3.6 10 (cell boundary number) c acceptance number (for k - number of events amspling); number of cycles ki - number of trials with C 1 = a.confidence limit result I Cdf a Cumulative distribution func- K-S a critical value in a K-S test tion, Cdf jx) m P' Xx I (we Table 2-13) Coafl. i = s-confidence that the state- L, U - subscripts meaning Lower ment in the .is true and Upper Cov * Covarlnm m. b - slope and intercept fory. see par.
2-8 aqf (X3 ; ) - Cdf of chi-square distribu- tion with iv degrees of No, w,, - see Lqs, 2-43 and 2-44 freedom N - sample size caqfc (x 2 ; a) complement of csqf (xy P'), c.qf (x; P,) - o - - U subscript, implies a fixed I - c00i (xW; V) value-not a random variable E - t * u-expected value, mean OC - Operating Characteristic F " a COf; the F-statistic P1 w probability of result i (con- faufkl) Cdf of Gaussian (a-normal) stant from trial to trial) distribution PkN w k-th from N order-statistic gulc (z) complement of garif (z), imufc (r) - I -- gaul' (z) pdf - probability density function H c cumulative hazard, pouf Y( 0) - Cdf of the Poisson distribu- Sf a exp (-/I) tion (mean is A) 2-1