The dataset was released by Aspiring Minds from the Aspiring Mind Employment Outcome 2015 (AMEO). The study is primarily limited only to students with engineering disciplines. The dataset contains the employment outcomes of engineering graduates as dependent variables (Salary, Job Titles, and Job Locations) along with the standardized scores from three different areas – cognitive skills, technical skills and personality skills. The dataset also contains demographic features. The dataset contains around 40 independent variables and 4000 data points. The independent variables are both continuous and categorical in nature. The dataset contains a unique identifier for each candidate
Exploratory Data Analysis (EDA): A Crucial Phase in Data Examination Exploratory Data Analysis (EDA) is an essential phase in any data exploration process. The primary aim is to uncover the structure, trends, and relationships within the data before moving on to advanced analysis. By applying a variety of methods, EDA aids in summarizing and visualizing key aspects of the data, revealing insights that guide further investigation.
Key elements of EDA include:
Overview of Data: The first step of EDA involves generating a high-level overview of the dataset. This includes noting the number of entries (rows), features (columns), and their data types. Descriptive statistics such as mean, median, percentiles, and standard deviation provide insights into the central tendencies and dispersion within the data.
Data Refinement: Refining the data is crucial for ensuring the quality and accuracy of the analysis. This process involves handling missing data, addressing outliers, and resolving inconsistencies. Methods such as imputing missing values, filtering out outliers, and standardizing data improve consistency and reliability.
Single-Variable Exploration: Univariate analysis focuses on evaluating one variable at a time. The goal is to understand the distribution, frequency, and summary statistics of each individual feature. Common visualization tools for this analysis include histograms, bar charts, and box plots for both continuous and categorical data.
Two-Variable Exploration: Bivariate analysis looks at the relationship between two features at once, aiming to discover correlations, associations, or patterns. Visualization techniques such as scatter plots, line charts, and heatmaps work well for analyzing numerical variables, while stacked bar charts and contingency tables can explore categorical pairings.
Multiple Variable Analysis: Multivariate analysis expands the exploration to include three or more features simultaneously. This helps uncover complex patterns in the data. Techniques like principal component analysis (PCA), factor analysis, and clustering are useful for identifying structures and patterns in high-dimensional datasets.
Data Visual Representation: Visualization plays an integral role in EDA, helping to reveal insights that might remain hidden in raw data. Simple plots like scatter diagrams and histograms are effective, while more advanced visual tools such as geospatial maps or interactive charts can offer deeper insights into complex relationships.
Statistical Validation: EDA often includes testing hypotheses or validating assumptions about the data using statistical techniques. Common tests such as t-tests, chi-square tests, correlation analysis, and ANOVA help confirm relationships and support conclusions drawn from the data.
Repetitive Exploration: EDA is a cyclical process where the data is revisited and refined in several iterations. Each iteration may lead to new questions, uncover further insights, or prompt additional analyses, ensuring a thorough exploration of the data.
EDA forms the foundation for advanced analytical methods, providing a comprehensive understanding of the data’s structure, trends, and interactions. By scrutinizing the dataset meticulously, analysts can make informed decisions and uncover actionable insights.
AMCAT Dataset Insights The AMCAT (Aspiring Minds Computer Adaptive Test) dataset is a detailed repository that captures various aspects of individuals' educational backgrounds, skills, and employment outcomes. AMCAT serves as a widely-used tool for assessing employability, offering employers a way to evaluate candidates across multiple competencies. The dataset allows for an in-depth analysis of factors influencing job placement and salary trends.
Main Features of the Dataset Demographic Attributes: The dataset contains demographic information like gender, date of birth, and geographic location, providing context about the candidates and enabling demographic-based trend analysis.
Academic Profile: Data on educational qualifications, including 10th and 12th-grade scores, college GPA, graduation year, and specialization, allow for the assessment of academic backgrounds and their influence on career outcomes.
Career Information: Details about job roles, locations, dates of joining (DOJ), and dates of leaving (DOL) provide insight into employment histories, job transitions, and professional paths of individuals.
Skill Evaluation: The dataset includes scores from various assessments, such as logical reasoning, quantitative aptitude, English proficiency, and domain-specific skills, which are critical in evaluating employability and matching candidates to job roles.
Personality Traits: Psychometric indicators such as conscientiousness, agreeableness, extraversion, neuroticism, and openness are also included, offering a deeper understanding of how personality factors influence job performance and career success.
Compensation Data: Salary information, which includes details about individual compensation packages, is one of the most vital aspects of the dataset. Analyzing this data can help identify key drivers behind salary variations, including education, skills, and experience.
EDA Approach on the AMCAT Dataset Conducting EDA on the AMCAT dataset is an essential initial task to identify underlying trends, relationships, and patterns. This section outlines the practical steps for carrying out EDA on this dataset, with the goal of extracting useful insights and preparing the data for more advanced analyses.
Initial Data Examination: Start by exploring the dataset’s structure, including the number of records and variables. Review the data types and use summary statistics to understand key features, while also identifying any missing or inconsistent data points for cleaning.
Exploring Single and Paired Features: Analyze each variable independently to understand its distribution, using tools like histograms and box plots for numeric features, or bar charts for categorical ones. In bivariate analysis, study the relationships between variables, for example, between educational qualifications and salary or skill scores and employment status.
Exploring Complex Interactions: Multivariate analysis helps discover patterns involving multiple variables. Using PCA or clustering can reduce dimensionality and highlight the relationships between different features, such as how skills and job roles are related to salary outcomes.
Visual Data Insights: Use visual representations like scatter plots, heatmaps, and bar charts to display key findings and patterns. Advanced visual tools such as interactive plots or cluster maps can further enhance the understanding of the dataset.
Iterative Data Exploration: Since EDA is an iterative process, it’s essential to revisit and refine the analysis as new insights emerge. Each step may reveal new questions or unexpected patterns, leading to further rounds of exploration.
By performing EDA on the AMCAT dataset, analysts can obtain a deeper understanding of the factors that influence employment outcomes, helping to develop predictive models or actionable recommendations based on the data.