# Univariate bivariate and multivariate analysis pdf

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Published: 13.05.2021  Univariate data — This type of data consists of only one variable. The analysis of univariate data is thus the simplest form of analysis since the information deals with only one quantity that changes. It does not deal with causes or relationships and the main purpose of the analysis is to describe the data and find patterns that exist within it.

## Applied Univariate, Bivariate, and Multivariate Statistics

Univariate data — This type of data consists of only one variable. The analysis of univariate data is thus the simplest form of analysis since the information deals with only one quantity that changes. It does not deal with causes or relationships and the main purpose of the analysis is to describe the data and find patterns that exist within it. The example of a univariate data can be height. Suppose that the heights of seven students of a class is recorded figure 1 ,there is only one variable that is height and it is not dealing with any cause or relationship.

The description of patterns found in this type of data can be made by drawing conclusions using central tendency measures mean, median and mode , dispersion or spread of data range, minimum, maximum, quartiles, variance and standard deviation and by using frequency distribution tables, histograms, pie charts, frequency polygon and bar charts. Bivariate data — This type of data involves two different variables.

The analysis of this type of data deals with causes and relationships and the analysis is done to find out the relationship among the two variables. Example of bivariate data can be temperature and ice cream sales in summer season. Suppose the temperature and ice cream sales are the two variables of a bivariate data figure 2. Here, the relationship is visible from the table that temperature and sales are directly proportional to each other and thus related because as the temperature increases, the sales also increase.

Thus bivariate data analysis involves comparisons, relationships, causes and explanations. These variables are often plotted on X and Y axis on the graph for better understanding of data and one of these variables is independent while the other is dependent.

Multivariate data — When the data involves three or more variables , it is categorized under multivariate. Example of this type of data is suppose an advertiser wants to compare the popularity of four advertisements on a website, then their click rates could be measured for both men and women and relationships between variables can then be examined. It is similar to bivariate but contains more than one dependent variable. The ways to perform analysis on this data depends on the goals to be achieved.

Some of the techniques are regression analysis,path analysis,factor analysis and multivariate analysis of variance MANOVA. Attention reader! Writing code in comment?

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Article Tags :. Most popular in Engineering Mathematics. Most visited in Misc. Load Comments. We use cookies to ensure you have the best browsing experience on our website. Univariate statistical analyses are data analysis procedures using only one variable. A variable measures a single attribute of an entity or individual e. Univariate statistical analyses may consist of descriptive or inferential procedures. Descriptive procedures typically describe the distribution of a variable using statistics or graphical representations. Inferential procedures are testing hypotheses about variable and aim to estimate the values of descriptive measures such as the mean, median, standard deviation, etc. ## What’s the difference between univariate, bivariate and multivariate descriptive statistics?

Data Analysis is the methodical approach of applying the statistical measures to describe, analyze, and evaluate data. The researchers analyze patterns and relationships among variables. Univariate, Bivariate, and Multivariate are the major statistical techniques of data analysis. Univariate analysis is the easiest methods of quantitative data analysis.

When it comes to the level of analysis in statistics, there are three different analysis techniques that exist. These are —. The selection of the data analysis technique is dependent on the number of variables, types of data and focus of the statistical inquiry. The following section describes the three different levels of data analysis —. Univariate analysis is the most basic form of statistical data analysis technique. 