Useful tips for everyday
How do you interpret F in ANOVA? The F ratio is the ratio of two mean square values. If the null hypothesis is true, you…
How is the ACF calculated? Autocorrelation Function (ACF) Let y h = E ( x t x t + h ) = E ( x…
How do you write a value range? The Range is the difference between the lowest and highest values. Example: In {4, 6, 9, 3, 7}…
What is a treatment arm in a clinical trial? Arm. A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment,…
How do you calculate confidence interval in RMSE? The square root of the mean square error, or the root mean square error, is often used…
What is factorial regression? To simplify matters, full-factorial regression designs are defined as designs in which all possible products of the continuous predictor variables are…
What is state space estimation? In control engineering, a state-space representation is a mathematical model of a physical system as a set of input, output…
How do you derive the mgf of a binomial distribution? Begin by calculating your derivatives, and then evaluate each of them at t = 0.…
How are recurrent neural networks used in predictive modeling? Unlike regression predictive modeling, time series also adds the complexity of a sequence dependence among the…
How do you explain varimax rotation? Varimax rotation (also called Kaiser-Varimax rotation) maximizes the sum of the variance of the squared loadings, where ‘loadings’ means…