The SPARKS Foundation DSBA Repository(September, 2020 - October, 2020)

This repo is for storing code and documents of the user Sandip Dutta related to internship at The SPARKS Foundation. During the internship, the following tasks were performed:

Data Science Mentor (October - December, 2020)

• Cleared doubts pertaining to tasks by fellow interns
• Received Letter of Recommendation for exceptional work

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Data Science Intern (September 2020)

• Business Analytics (TASK - 4) - In this final task, we were to analyse a business data.

  • Data was analysed using pandas.
  • EDA was performed using Seaborn and Matplotlib.
  • Applied Hypothesis tests like chi2_contingency and kendalltau using scipy.stats.
  • Fitted a RidgeRegression model from sklearn
  • The final accuracy came to about 0.995.

• Decision Tree (TASK - 3) - In this task we were to explore Decision Tree Algorithm using sklearn on IRIS dataset.

  • Splitted the data into train and validation part.
  • Fitted a DecisionTreeClassifier on the dataset.
  • For visulaising it, we used matplotlib.
  • Then we plotted decision surfaces for two features and checked the accuracy of the model.
  • Decision tree gave a good f1-score(near to 1.00).

• Iris_Unsupervised (TASK - 2) - This folder is for the iris data analysis using KMeans and DBSCAN algorithm.

  • First plots were generated and features visualised.
  • Then DBSCAN was applied and we got the optimum number of clusters as 3.
  • We shifted to K Means(after scaling the data).
  • We determined the ideal number of clusters using elbow method and it too came out to be 3.
  • Lastly, we plotted a confusion matrix to see the classification.

• Student_data (TASK - 1) - This folder contains data for some students.

  • Task is to predict whether score increases if number of hours of study increases.
  • We performed EDA and fitted a linear Regression model for this data.
  • The accuracy came to be about 95 % based on r2_score metric.

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