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Econometrics

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Econometrics and the Probability Density Function (PDF)

A probability density function (PDF) shows the probabilities of a random variable for all its possible values. The probabilities associated with specific values [more…]

Econometrics and the Cumulative Density Function (CDF)

The cumulative density function (CDF) of a random variable X is the sum or accrual of probabilities up to some value. It shows how the sum of the probabilities approaches 1, which sometimes occurs at a [more…]

Bivariate or Joint Probability Density and Econometrics

Because one primary objective of econometrics is to examine relationships between variables, you need to be familiar with probabilities that combine information on two variables. A [more…]

How to Predict the future with Conditional Probability Density

Prediction in econometrics involves some prior knowledge. For example, you may attempt to predict how many “likes” your status update will get on Facebook given the number of “friends” you have and time [more…]

How to Make Generalizations in Econometrics with Expected Value or Mean

In econometrics, the expected value (or mean) of a random variable provides a measure of central tendency, which means that it provides one measurement of where the data tends to cluster. [more…]

10 Components of a Good Econometrics Research Project

Following are the ten components you need to include in any econometrics research project. No matter what the specifics of your class assignment, you’ll probably be expected to come up with a topic, collect [more…]

Econometrics and the t Distribution

The t distribution is used quite a bit in econometrics. You probably used the t distribution extensively when dealing with means in your statistics class, but in econometrics you also use it for regression [more…]

How to Select Independent Variables for Your Econometric Model

One of the most important decisions you make when specifying your econometric model is which variables to include as independent variables. Here, you find out what problems can occur if you include too [more…]

The Role of the Breusch-Pagan Test in Econometrics

The Breusch-Pagan (BP) test is one of the most common tests for heteroskedasticity. It begins by allowing the heteroskedasticity process to be a function of one or more of your independent variables, and [more…]

Test for Heteroskedasticity with the White Test

In econometrics, an extremely common test for heteroskedasticity is the White test, which begins by allowing the heteroskedasticity process to be a function of one or more of your independent variables [more…]

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