Useful tips for everyday
How do stimulants affect reaction time? Stimulants decrease reaction time in humans as well as laboratory rats. This effect is seen as a decrease in…
What is atomic weight and give an example? atomic weight, also called relative atomic mass, ratio of the average mass of a chemical element’s atoms…
What does curvilinear mean in stats? While the terms linear and nonlinear have standard definitions in statistics, the term curvilinear does not have a standard…
Does OLS require stationarity? Clarification: you can use non-stationary data with OLS if the series are cointegrated. However, when doing so you better show that…
What is a longitudinal experimental design? A longitudinal study (or longitudinal survey, or panel study) is a research design that involves repeated observations of the…
What is the purpose of cube in SSAS? An OLAP cube, also known as multidimensional cube or hypercube, is a data structure in SQL Server…
What is spurious regression in econometrics? A “spurious regression” is one in which the time-series variables are non stationary and independent. We derive corresponding results…
How do you calculate standardized residuals in Excel? Choose Tools, Data Analysis, Regression. Highlight the column containing Y, then the column containing X, then the…
Is sample proportion probability? The sample proportion may or may not equal the population proportion. Since ¯p was obtained through a random process, it is…
What does a 2×3 factorial design mean? A factorial design is one involving two or more factors in a single experiment. Such designs are classified…