mean 1 (mēn) v. meant (mĕnt), mean·ing, means v.tr. 1. a. To be used to convey; denote: "'The question is,' said Alice, 'whether you can make words mean so many different things'" (Lewis Carroll). b. To act as a symbol of; signify or represent: In this poem, th...
The population variance is the average squared deviation between data points and the mean value. Calculating variance requires first finding the mean, then subtracting the mean from each data point, squaring these deviations, and finding the average of these. The population standard deviation is the...
Statistical analysis Descriptive statistics for individual characteristics of the study population were presented with a number of par- ticipants and proportion for categorical variables, mean and standard deviation (SD) for continuous variables. Summary statistics of air pollution concentrations (PM2.5...
The digitized signals were bandpass filtered between 300 Hz and 3 kHz. We recorded neural activity as threshold crossings, where a threshold crossing was detected when the depolarizing phase of the voltage signal crossed a threshold of three times the root-mean-square (RMS) voltage. We ...
We should not be so involved with the mechanics of doing these tests that we forget to think about the data and what they mean. A good example can be found in an article published in the New England Journal of Medicine in 1965 (Binder et al., 1965). Investigators in the departments of...
II. A curve has been found representing the frequency distribution of values of the means of such samples, when these values are measured from the mean of the population in terms of the standard deviation of the sample…IV. Tables are given by which it can be judged whether a series of ...
Note that in many cases for five or six components, the weights or standard deviation parameters are close to zero; for some cases, two of the inferred mean parameters are very close to each other. Full size image Table 1 Change in BIC values as the number of normal distributions in the...
EDSS: expanded disability status scale; HC: healthy controls; NA: not available; RRMS: relapsing-remitting multiple sclerosis; SD: standard deviation. * mean and standard deviation; ** median and range. Table 2.MRI sequence parameters for the acquisition T1-weighted images. ...
As sample size increases, the variability of the sampling distribution of means decreases. This means that ___ also decreases. a. the population mean b. the population standard deviation c. the sample mean d. sampling error What is the symbol fo...
Population genetics summary and relatedness of Hyla orientalis in the Chernobyl region. a Correlation plot of nucleotide diversity (π) on averaged total dose rate (ATDR) represented at the mean and standard error per sampled population. b Individual heterozygosity on individual total dose rate (IT...