Useful tips for everyday
What percentage is a survey response statistically valid? In standard surveys, the widely accepted confidence interval is 5%. We suggest aiming for nothing higher than…
What does it mean to have a significant interaction effect in a factorial design? Simple Effects. If there is a significant interaction, it indicates that,…
How is probability density calculated? The function fX(x) gives us the probability density at point x. It is the limit of the probability of the…
What should you do before you perform a linear regression? It consists of 3 stages – (1) analyzing the correlation and directionality of the data,…
How is a regression coefficient related to log of Y? Since this is just an ordinary least squares regression, we can easily interpret a regression…
How do you interpret the p-value in probability? The smaller the p-value, the stronger the evidence that you should reject the null hypothesis. A p-value…
Is normality important for OLS? The condition of normality of the residuals is useful when residuals are also homoskedastic. The result is then that OLS…
How to calculate gradient in gradient descent? How to understand Gradient Descent algorithm Initialize the weights (a & b) with random values and calculate Error…
How do I choose a website name? 11 Important Factors to Consider When Choosing a Domain Name Choose Your Top-Level Domain Extension Carefully. Incorporate Keywords…
What is CFA model? CFA allows for the assessment of fit between observed data and an a prioriconceptualized, theoretically grounded model that specifies the hypothesized…