Browsing Category

Analytics

Point Estimation

So far we know that when the constants of a population (the parameters) are unknown, we estimate them by finding estimates based on the samples drawn from the same population. This method is called “estimation”. Now, since we are…

HOW TO USE DESCRIPTIVE ANALYTICS

DESCRIPTIVE ANALYTICS How frequently you use statistical analyses in your work?  Is it every day? Every week? Every quarter? Annually?None at all? Now it is time together your data and evaluate your performance and get ready to take off.…

ANOVA Using SPSS

ONE-WAY CLASSIFICATION ________________________________________________________________________________________________ Definition   :   Analysis of variance (ANOVA) uses F-tests to statistically assess the equality of means when you have…

Linear Regression Assumptions

Linear regression makes several key assumptions: Linear relationship Multivariate normality No or little multicollinearity No auto-correlation Homoscedasticity Linear regression  needs at least 2 variables of metric (ratio or interval)…

Hypothesis Testing

The objective of testing statistical significance of  (also ) by stating that we want to test the validity of the null hypothesis (HN), that the true population parameter β=0 against the alternative hypothesis (HA) that is different from…