Does response variable need to be normally distributed?

Does response variable need to be normally distributed?

To obtain interval estimates or to test statistical hypotheses about parameter values, yes you need the response variable to distribute normally.

What is the response variable called?

❖ The variable that researchers are trying to explain or predict is called the response variable. It is also sometimes called the dependent variable because it depends on another variable. ❖ The variable that is used to explain or predict the response variable is called the explanatory variable.

How do you know a variable is continuous?

If you start counting now and never, ever, ever finish (i.e. the numbers go on and on until infinity), you have what’s called a continuous variable. If your variable is “Number of Planets around a star,” then you can count all of the numbers out (there can’t be an infinite number of planets).

What do you mean by response variable in statistics?

In statistics, a response variable is the variable about which a researcher is asking a question. He or she wants to know if this variable ‘responds’ to other factors being examined. This lesson gives you a better understanding of this concept.

Is it possible for a response variable to change?

The short answer is no. There may be times when you believe a response variable will change based on certain factors, but there may be no change at all. Or, the response variable may respond in a way you never could have imagined.

What does it mean when there are many zeros in a variable?

This means that, there are no negative numbers; in the great majority of districts the variable is 0, but there also exists very large numbers (up to 80,000) with very low frequency. Following Moti Nisenson’s advice, I edit some graphs into this post that make the distribution clearer.

Which is an explanatory variable and which is a response variable?

The students want to use height to predict age so the explanatory variable is height and the response variable is age. Research question: Do fourth graders tend to be taller than third graders?