Tag: assumption tests in STATA

By Rashmi Sajwan & Priya Chetty on October 31, 2018 10 Comments

Time series data requires some diagnostic tests in order to check the properties of the independent variables. This is called ‘normality’. This article explains how to perform normality test in STATA.

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By Rashmi Sajwan & Priya Chetty on October 22, 2018 7 Comments

This article shows a testing serial correlation of errors or time series autocorrelation in STATA. Autocorrelation problem arises when error terms in a regression model correlate over time or are dependent on each other.

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By Rashmi Sajwan & Priya Chetty on October 16, 2018 12 Comments

Heteroskedastic means “differing variance” which comes from the Greek word “hetero” (‘different’) and “skedasis” (‘dispersion’). It refers to the variance of the error terms in a regression model in an independent variable.

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By Divya Narang & Priya Chetty on December 20, 2017 17 Comments

The previous article based on the Dickey-Fuller test established that GDP time series data is non-stationary.

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By Divya Narang & Priya Chetty on December 2, 2017 8 Comments

The purpose of this article is to explain the process of determining and creating stationarity in time series analysis. Creating a visual plot of data is the first step in time series analysis. Graphical representation of data helps understand it better.

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