Statistics MCQs, Analysis, Software
How are the regression coefficients interpreted in simple regression? The simple regression model is The formula for Regression Coefficients in Simple Regression Models is: $$b = \frac{n\Sigma XY – \Sigma X \Sigma Y}{n \Sigma X^2 – (\Sigma X)^2}$$ $$a = \bar{Y} – b \bar{X}$$ The basic or unstandardized regression coefficient …
Null and Alternative Hypothesis of different statistical tests such as independent sample t test
Type I and Type II Errors In hypothesis testing, there are two possible errors we can make: Type I and Type II errors. If you do reject your null hypothesis, then it is also essential that you determine whether the size of the relationship is practically significant.The hypothesis test procedure …
Significance Level The significance level in statistics is the level of probability at which it is agreed that the null hypothesis will be rejected. In academic research, usually, a 0.05 level of significance (level of significance) is used. The level of significance is also called a level of risk. Significance …