# How do you interpret a constant?

## How do you interpret a constant?

The constant is often defined as the mean of the dependent variable when you set all of the independent variables in your model to zero. In a purely mathematical sense, this definition is correct.

### What does _cons mean?

The last variable (_cons) represents the constant, also referred to in textbooks as the Y intercept, the height of the regression line when it crosses the Y axis. In other words, this is the predicted value of science when all other variables are 0. k.

**What is the coefficient of a log?**

When you raise a quantity to a power, the rule is that you multiply the exponents together. In this case, one of the exponents will be the log, and the other exponent will be the power you’re raising the quantity to. The exponent on the argument is the coefficient of the log.

**What does the log of a variable mean?**

A regression model will have unit changes between the x and y variables, where a single unit change in x will coincide with a constant change in y. Taking the log of one or both variables will effectively change the case from a unit change to a percent change.

## What does the coefficient of the constant tell us?

In regression with multiple independent variables, the coefficient tells you how much the dependent variable is expected to increase when that independent variable increases by one, holding all the other independent variables constant.

### What if the constant is not significant?

It means that the mean effect of all omitted variables may not be important, however, that does not mean that constant should be taken out because it does two other things in an equation.

**Why is log used in regression?**

**What does the constant mean in logit?**

The constant is the predicted value when all the X variables = 0. This may not even be possible, e.g. you can’t weigh 0 pounds; you can’t get a score of zero on a scale that runs from 400 to 1200.

## What does it mean if the constant is significant in logistic regression?

your data may be independent of X. if constant is significant and slope is not significant means, your data (y) may be || to x-axis if linear regression is assumed. As others have written the intercept is the mean of the response when all predictors are zero.