Sentences with phrase «significance level»
The significance level refers to a predetermined threshold or standard used to assess the strength of evidence in statistical analysis. It helps determine whether the results or differences observed in a study are statistically meaningful. If the statistical test's p-value is below the significance level, it suggests that the observed results are unlikely to be due to chance and are therefore considered significant. Full definition
Because exclusion of this infant from the regression analyses did not change the pattern or significance levels of the findings, he was included in the sample.
pediatrics.aappublications.org
[2] This conclusion is strengthened by detection of anthropogenic change in the upper ocean with high significance level.
In fact, the nominal statistical significance levels of all statements are quite a bit stronger than we assess them couched in likelihood language, in order to account for remaining uncertainties.
Right: global ocean heat - content (HC) decadal trends (1023 Joules per decade) for the upper ocean (surface to 300 meters) and two deeper ocean layers (300 to 750 meters and 750 meters to the ocean floor), with error bars defined as + / - one standard error x1.86 to be consistent with a 5 % significance level from a one - sided Student t - test.
Huybers additionally makes an interesting point regarding the calculation of significance levels in MM05 and shows that a crucial step (the rescaling of variance of the proxies to match the variance in the instrumental calibration period) was missed out.
The predictability horizon corresponds to the time interval when the anomaly correlation coefficient exceeds the 99 % significance level using 37 degrees of freedom (correlation coefficient is 0.37)
The data analysis were accounted by ANOVA, Tukey's HSD test with significance level of p < 0,05 using the SPSS program.
The distribution of the measured activity in the now 42 superflare star ensemble is still significantly different from the distribution of the measured activity levels of all the 5,648 solar - like stars at a 6σ significance level.
They need the magic.05 significance level, or something approaching it.
In contrast, the daily rainfall variability during July - August shows a statistically significant (5 per cent significance level) increasing trend.
This conclusion is strengthened by detection of anthropogenic change in the upper ocean with high significance level [9.4.1.2, 9.4.1.4, 9.5.1.1, 9.3.3.2, 9.7][WG1]
Approximate RE significance levels can then be determined, assuming this process represents an appropriate null hypothesis model.
Choosing lower and upper limits that encompass the range of these results and deflating significance levels in order to account for structural uncertainty in the estimate leads to the conclusion that it is very unlikely that TCR is less than 1 °C and very unlikely that TCR is greater than 3.5 °C.
In particular, the Historical and Natural temperatures are found to be different at the 0.001 significance level during the most recent 20 -, 30 -, and 40 - y periods of the historical simulations (using the block bootstrap resampling applied in ref.
It's sometimes called the likelihood ratio test, and by the Neyman - Pearson lemma is the most powerful against a given significance level.
Further uncertainties in the estimated significance levels arise from the use of model internal variability simulations and relatively short instrumental observations (after subtraction of an estimated greenhouse gas signal) to estimate the natural climate variability.
Test of equality of health care cost means for patients with a medical condition according to their FP and patients with Health anxiety were done by computing the bootstrap test statistic achieved significance level (ASL)[38].
Estimated regression parameters and correlations with standard errors, critical ratios (estimate / standard error), and significance levels between all variables in the structural equation model
A slightly lower significance level for Ross.
To detect a reduction of 0.3 SD units in the mean score for the primary outcome with 80 % power at the two - sided significance level of 0.05, 175 children were required for each of the intervention and control groups.
The very high significance levels of model — observation discrepancies in LT and MT trends that were obtained in some studies (e.g., Douglass et al., 2008; McKitrick et al., 2010) thus arose to a substantial degree from using the standard error of the model ensemble mean as a measure of uncertainty, instead of the ensemble standard deviation or some other appropriate measure for uncertainty arising from internal climate variability.
All statistical analyses were performed with the Statistical Package for the Social Sciences (SPSS version 17.0, 2009, Chicago, IL), and a significance level of 0.05 was adopted.
We used Stata software version 8 (StataCorp, College Station, Tex) for all hypothesis tests, with a significance level of α =.05.
Statistical significance levels are narrow.
A lower α, or significance level, would require much bigger sample sizes, making many studies impossible.
(capture of Fig. 2): «Significance level of correlations: 67 % for cosmic rays and low clouds, 98 % for solar irradiance and low clouds...... 30 % for cosmic rays and [daytime] low clouds, 90 % for solar irradiance and [daytime] low clouds.»