Overall, professor salaries barely budged during past year, the Chronicle says, noting that on average, salaries for full-time faculty rose 1.8% in the 2011-12 school year, while inflation was 3%. Tuition, meanwhile, has increased dramatically.
Inferential Statistics. Inferential statistics is concerned with making predictions or inferences about a population from observations and analyses of a sample. That is, we can take the results of an analysis using a sample and can generalize it to the larger population that the sample represents.
As an example, in the one-sample t-test, where is the sample mean from a sample, of size, is the ratio of sample standard deviation over population standard deviation, is the population standard deviation of the data, and is the population mean.or a one-sample multivariate test, the hypothesis is that the mean vector () is equal to a given vector (). The test statistic is Hotelling's T 2 : where n is the sample size, is the vector of column means and is a sample covariance matrix.