In statistical significance testing, a one-tailed test and a two-tailed test are alternative ways of computing the statistical significance of a parameter...
12 KB (1,759 words) - 11:25, 12 February 2024
two-tailed p-values can be calculated as Φ(Z)(for lower/left-tailed tests), Φ(−Z) (for upper/right-tailed tests) and 2Φ(−|Z|) (for two-tailed tests) where...
12 KB (1,791 words) - 14:35, 4 February 2024
Omnibus test One- and two-tailed tests One-class classification One-factor-at-a-time method One-tailed test – redirects to One- and two-tailed tests One-way...
87 KB (8,285 words) - 04:29, 7 October 2024
Null hypothesis (category Statistical hypothesis testing)
Directed tests combine the attributes of one-tailed and two-tailed tests. "...directed tests should be used in virtually all applications where one-sided...
39 KB (5,373 words) - 15:26, 17 October 2024
the one-tailed test above. In order to consider both the biases, we use a two-tailed test. Note that to do this we cannot simply double the one-tailed p-value...
11 KB (1,792 words) - 17:47, 20 August 2024
location test of the null hypothesis such that the means of two populations are equal. All such tests are usually called Student's t-tests, though strictly...
50 KB (6,785 words) - 09:13, 2 October 2024
the results of the tail flick test and it is important to consider this effect when performing the test. Lastly, many thermal tests do not distinguish...
9 KB (1,128 words) - 20:57, 9 May 2024
the revised test statistic T−50. Using one of these sampling distributions, it is possible to compute either a one-tailed or two-tailed p-value for the...
13 KB (1,099 words) - 21:44, 21 July 2024
t-distribution to test one of two possible null hypotheses: that the two population means are equal, in which a two-tailed test is applied; or that one of the population...
13 KB (1,239 words) - 02:28, 22 July 2024
between hind leg length and foreleg length. This is a two-tailed test, rather than a one-tailed test. For the two tailed test, the alternative hypothesis...
22 KB (3,294 words) - 17:44, 20 August 2024
critical values for any given percentage point depend on: whether a one- or- two-tailed test is performed; the number of groups being compared; the overall...
14 KB (2,417 words) - 08:54, 13 June 2024
The tail suspension test (TST) is an experimental method used in scientific research to measure stress in rodents. It is based on the observation that...
8 KB (999 words) - 15:55, 4 March 2024
a pooled t-test or the Welch's t-test for two sample tests or analysis of variance or Welch's modified oneway ANOVA for multi-level tests. However, it...
8 KB (1,059 words) - 15:44, 3 April 2024
if the population distributions are normal or are light-tailed and symmetric, then ANOVA F-test will generally have greater power which is the probability...
17 KB (2,324 words) - 11:16, 28 September 2024
P-value (redirect from Two-sided P value)
called a one-tailed test. However, one might be interested in deviations in either direction, favoring either heads or tails. The two-tailed p-value,...
58 KB (6,996 words) - 01:41, 8 October 2024
kstest and kstest2 for one-sample and two-sample Kolmogorov–Smirnov tests, respectively. The R package "KSgeneral" computes the KS test statistics and its...
32 KB (4,105 words) - 19:57, 11 September 2024
unmistakable wedge-shaped tail, an elongated upper mandible, a strong beak and powerful feet. The wedge-tailed eagle is one of 12 species of large, predominantly...
170 KB (22,915 words) - 22:59, 5 October 2024
Permutation, Parametric, and Bootstrap Tests of Hypotheses (3rd ed.). New York: Springer. Derrick, B; Ruck, A; Toher, D; White, P (2018). "Tests for equality of...
5 KB (691 words) - 03:20, 29 March 2024
original example is termed a one-sided or a one-tailed test while the generalization is termed a two-sided or two-tailed test. The statement also relies...
81 KB (10,172 words) - 01:36, 21 September 2024
sample sizes. It is named after its inventor, Ronald Fisher, and is one of a class of exact tests, so called because the significance of the deviation from...
29 KB (3,949 words) - 00:23, 9 July 2024
better. A two-tailed test may still be used but it will be less powerful than a one-tailed test, because the rejection region for a one-tailed test is concentrated...
38 KB (4,059 words) - 02:19, 27 June 2024
than by SNC. By December 2012, 15 full-scale tests had been successfully conducted, and additional ground tests continued into March 2013. In June 2012, the...
69 KB (5,881 words) - 14:08, 21 September 2024
Fisher's method (redirect from Fisher's combined probability test)
for one-sided right-tailed p-values; minor modifications can be made if two-sided or left-tailed p-values are being analysed. Specifically, if two-sided...
12 KB (1,480 words) - 00:19, 28 February 2024
essentially a V tail that extended both above and below the fuselage. The most popular conventionally V-tailed aircraft that has been mass-produced is the...
10 KB (1,063 words) - 17:29, 28 September 2024
related. The rufous-tailed hawk, while comparatively little studied, is very similar to the red-tailed hawk, being about the same size and possessing the same...
229 KB (29,507 words) - 16:23, 1 October 2024
outlier. This table summarizes the limit values of the two-tailed Dixon's Q test. Grubbs's test for outliers Halpern, Arthur M. "Experimental physical...
6 KB (567 words) - 03:27, 31 July 2024
December 2008 and August 2009, was undertaken to validate the design and gradually expand the aircraft operating envelope. The flight tests were complete...
17 KB (1,366 words) - 13:52, 21 September 2024
Alternative hypothesis (category Statistical hypothesis testing)
with the region of rejection for only one tail of the sampling distribution. Two-tailed directional. A two-tailed directional alternative hypothesis is...
8 KB (1,053 words) - 08:18, 16 May 2024
various one-tailed and two-tailed versions of the test in the wilcoxon_test function. SciPy includes an implementation of the Wilcoxon signed-rank test in...
39 KB (6,469 words) - 17:31, 18 September 2024
Chronic wasting disease (section Signs and symptoms)
deer, white-tailed deer, black-tailed deer, and moose. Other ruminant species, including wild ruminants and domestic cattle, sheep, and goats, have been...
56 KB (6,547 words) - 22:32, 23 September 2024