What is the Twitter Search API? The Twitter search API, one of three such APIs (search, streaming, “firehose“), allows access to a subset of popular or recent tweets (in the…

## Two way ANOVA calculation BY HAND (ANalysis Of VAriance)

The two-way ANOVA compares the mean differences between groups that have been split on two independent variables (called factors). The primary purpose of a two-way ANOVA is to understand if…

## Types of Cluster Analysis and Techniques using R

Index Table

• Definition
• Types
• Techniques to form cluster method

Definition:

1. It groups the similar data in same group.
2. The goal of this procedure is that the objects in a group are similar to one another and are different from the objects in other groups.
3. Greater the similarity within a group and greater difference between the groups, more distinct the clustering.
4. Cluster analysis provides a potential relationship and construct systematic structure in large number of varables and observations.

Main objectives of clustering are: (more…)

## Recommendation Engine using Python (Collaborative Filtering)

We have seen the need of recommendation engine in real life as well as the importance of recommendation engine in online and finally we have discussed 3 methods of recommendation…

## Recover SQL Server Password Using Different Methods

SQL server is a database that is used for storing database and retrieving data from it (whenever required). Although, the server administrator has permission to create any number of users…

## Linear Regression Assumptions

Linear regression makes several key assumptions: Linear relationship Multivariate normality No or little multicollinearity No auto-correlation Homoscedasticity Linear regression  needs at least 2 variables of metric (ratio or interval) scale. …

## Hypothesis Testing

The objective of testing statistical significance of  (also ) by stating that we want to test the validity of the null hypothesis (HN), that the true population parameter β=0 against…

## Chi-Squared Test – The Purpose, The Math, When and How to Implement?

Before we build stats/machine learning models, it is a good practice to understand which predictors are significant and have an impact on the response variable. In this post we deal…

## How To Recover SQL Server Suspect Database

One of common situations that are faced by the users of SQL Server is while trying to connect to database server; he/she realize that it is in suspect mode. The…

## Introduction about Logistic Regression Model

Hello guys, we have learnt about Linear Regression model in my previous article. Today, in this article we will get to learn the basics of Logistic Regression and some tricks to find the relation between the variables.

Do you know what type of variable is used in logistic regression… Don’t worry, if you don’t (more…)