Useful tips for everyday
Is the rate of successful message delivery over a communication channel? In general terms, throughput is the rate of production or the rate at which…
What statistical test is used for nominal data? Statistical tests for nominal data Chi-square tests are nonparametric statistical tests for categorical variables. The goodness of…
What is the difference between small sample and large sample run test? The methods of calculation for both test statistics and critical values are different…
What is the variance of chi-square distribution? The chi-square distribution has the following properties: The mean of the distribution is equal to the number of…
How many dummy variables are needed in regression? The general rule is to use one fewer dummy variables than categories. So for quarterly data, use…
Do you need to delete non-significant predictors in logistic regression? You’ll probably find that deleting the non-significant predictors does not harm your model, and even…
What is expected value in probability density function? It is the weighted average of the values that X can take, with weights provided by the…
What is relative weight analysis? Relative Weights Analysis (RWA) is a method of calculating relative importance of predictor variables in contributing to an outcome variable.…
Can you use external regressors in ARIMA model? Also, I really want to know if it’s statistically correct to use the two external regressors in…
When is the estimated covariance of two regression coefficients high? The (estimated) covariance of two regression coefficients is the covariance of the estimates, b. If…