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Top repositories
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Assignment-04-Simple-Linear-Regression-2
Assignment-04-Simple-Linear-Regression-2. Q2) Salary_hike -> Build a prediction model for Salary_hike Build a simple linear regression model by performing EDA and do necessary transformations and select the best model using R or Python. EDA and Data Visualization. Correlation Analysis. Model Building. Model Testing. Model Predictions.Jupyter Notebook
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Assignment-1-Q24-Basic-Statistics-Level-1-
Q 24) A Government company claims that an average light bulb lasts 270 days. A researcher randomly selects 18 bulbs for testing. The sampled bulbs last an average of 260 days, with a standard deviation of 90 days. If the CEO's claim were true, what is the probability that 18 randomly selected bulbs would have an average life of no more than 260 daysJupyter Notebook
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Assignment-11-Text-Mining-01-Elon-Musk
Assignment-11-Text-Mining-01-Elon-Musk, Perform sentimental analysis on the Elon-musk tweets (Exlon-musk.csv), Text Preprocessing: remove both the leading and the trailing characters, removes empty strings, because they are considered in Python as False, Joining the list into one string/text, Remove Twitter username handles from a given twitter text. (Removes @usernames), Again Joining the list into one string/text, Remove Punctuation, Remove https or url within text, Converting into Text Tokens, Tokenization, Remove Stopwords, Normalize the data, Stemming (Optional), Lemmatization, Feature Extraction, Using BoW CountVectorizer, CountVectorizer with N-grams (Bigrams & Trigrams), TF-IDF Vectorizer, Generate Word Cloud, Named Entity Recognition (NER), Emotion Mining - Sentiment Analysis.Jupyter Notebook
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Assignment-05-Multiple-Linear-Regression-2
Assignment-05-Multiple-Linear-Regression-2. Prepare a prediction model for profit of 50_startups data. Do transformations for getting better predictions of profit and make a table containing R^2 value for each prepared model. R&D Spend -- Research and devolop spend in the past few years Administration -- spend on administration in the past few years Marketing Spend -- spend on Marketing in the past few years State -- states from which data is collected Profit -- profit of each state in the past few years.Jupyter Notebook
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Assignment-1-Q23-Basic-Statistics-Level-1-
Q 23) Calculate the t scores of 95% confidence interval, 96% confidence interval, 99% confidence interval for sample size of 25Jupyter Notebook
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Assignment-2-Set1-Q1-Basic-Statistic-Level-2-
Plot the data, find the outliers and find out μ,σ,σ^2Jupyter Notebook
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Multi-Linear-Reg
Multi-Linear-RegJupyter Notebook
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P27.-Supervised-ML---Multiple-Linear-Regression---Toyoto-Cars
Supervised-ML---Multiple-Linear-Regression---Toyota-Cars. EDA, Correlation Analysis, Model Building, Model Testing, Model Validation Techniques, Collinearity Problem Check, Residual Analysis, Model Deletion Diagnostics (checking Outliers or Influencers) Two Techniques : 1. Cook's Distance & 2. Leverage value, Improving the Model, Model - Re-build, Re-check and Re-improve - 2, Model - Re-build, Re-check and Re-improve - 3, Final Model, Model Predictions.Jupyter Notebook
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Assignment-1-Q9_a-Basic-Statistics-Level-1-
Q9) Calculate Skewness, Kurtosis & draw inferences on the following data Cars speed and distance Use Q9_a.csvJupyter Notebook
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P24.-Supervised-ML---Simple-Linear-Regression---Newspaper-data
Supervised-ML---Simple-Linear-Regression---Newspaper-data. EDA and Visualization, Correlation Analysis, Model Building, Model Testing, Model predictions.Jupyter Notebook
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Assignment-07-Clustering-Hierarchical-Airlines-
Assignment-07-Clustering-Hierarchical-Airlines. Perform clustering (hierarchical) for the airlines data to obtain optimum number of clusters. Draw the inferences from the clusters obtained. Data Description: The file EastWestAirlinescontains information on passengers who belong to an airline’s frequent flier program. For each passenger the data include information on their mileage history and on different ways they accrued or spent miles in the last year. The goal is to try to identify clusters of passengers that have similar characteristics for the purpose of targeting different segments for different types of mileage offers.Jupyter Notebook
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Assignment-1-Q20-Basic-Statistics-Level-1-
Data _set: Cars.csv Calculate the probability of MPG of Cars for the below cases. MPG <- Cars$MPG a. P(MPG>38) b. P(MPG<40) c. P (20<MPG<50)Jupyter Notebook
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Assignment-05-Multiple-Linear-Regression-1
Multiple-Linear-Regression-1. Consider only the below columns and prepare a prediction model for predicting Price of Toyota Corolla.Jupyter Notebook
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P36.-Supervised-ML---Decision-Tree---C5.0-Entropy-Iris-Flower-
Supervised-ML-Decision-Tree-C5.0-Entropy-Iris-Flower-Using Entropy Criteria - Classification Model. Import Libraries and data set, EDA, Apply Label Encoding, Model Building - Building/Training Decision Tree Classifier (C5.0) using Entropy Criteria. Validation and Testing Decision Tree Classifier (C5.0) ModelJupyter Notebook
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P23.-EDA-1
EDA (Exploratory Data Analysis) -1: Loading the Datasets, Data type conversions,Removing duplicate entries, Dropping the column, Renaming the column, Outlier Detection, Missing Values and Imputation (Numerical and Categorical), Scatter plot and Correlation analysis, Transformations, Automatic EDA Methods (Pandas Profiling and Sweetviz).Jupyter Notebook
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Assignment-04-Simple-Linear-Regression-1
Assignment-04-Simple-Linear-Regression-1. Q1) Delivery_time -> Predict delivery time using sorting time. Build a simple linear regression model by performing EDA and do necessary transformations and select the best model using R or Python. EDA and Data Visualization, Feature Engineering, Correlation Analysis, Model Building, Model Testing and Model Predictions using simple linear regression.Jupyter Notebook
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Tableau-_Basics5
Tableau-_Basics Tutorial 4
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Tableau_Basics8
Tableau_Basics Tutorial 8
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Tableau_Basics2
Tableau_Basics2 tutorial
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20
Tableau-_Basics3
Tableau-_Basics3 Tutorial
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Probabilty-calc-2
Probability Calculation in PythonJupyter Notebook
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22
Tableau_Basics6
Tableau_Basics Tutorial 6
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Tableau-_Basics4
Tableau-_Basics Tutorial 4
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Tableau_Basics9
Tableau_Basics Tutorial 9
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P25.-Supervised-ML---Simple-Linear-Regression---Waist-Circumference-Adipose-Tissue-Data
Supervised-ML---Simple-Linear-Regression---Waist-Circumference-Adipose-Tissue-Data. EDA and data visualization, Correlation Analysis, Model Building, Model Testing, Model Prediction.Jupyter Notebook
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Survival-Analytics
Applying KaplanMeierFitter model on Time and EventsJupyter Notebook
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27
vaitybharati
Config files for my GitHub profile.
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Tableau_Basics7
Tableau_Basics Tutorial 7
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29
Assignment-1-Q21_b-Basic-Statistics-Level-1-
Check Whether the Adipose Tissue (AT) and Waist Circumference(Waist) from wc-at data set follows Normal DistributionJupyter Notebook
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30
Assignment-1-Q7-Basic-Statistics-Level-1-
Q7) For Points,Score,Weigh: Find Mean, Median, Mode, Variance, Standard Deviation, and Range and also Comment about the values/ Draw some inferences. Use Q7.csv fileJupyter Notebook
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Assignment-1-Q9_b-Basic-Statistics-Level-1-
Q9) Calculate Skewness, Kurtosis & draw inferences on the following data SP and Weight(WT) Use Q9_b.csvJupyter Notebook
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Tableau-Basics
Tableau basics tutorial
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Assignment-1-Q12-Basic-Statistics-Level-1-
Below are the scores obtained by a student in tests 34,36,36,38,38,39,39,40,40,41,41,41,41,42,42,45,49,56. Find mean, median, variance, standard deviation. What can we say about the student marks?Jupyter Notebook
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Assignment-1-Q11-Basic-Statistics-Level-1-
Q11) Suppose we want to estimate the average weight of an adult male in Mexico. We draw a random sample of 2,000 men from a population of 3,000,000 men and weigh them. We find that the average person in our sample weighs 200 pounds, and the standard deviation of the sample is 30 pounds. Calculate 94%,98%,96% confidence interval?Jupyter Notebook
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Assignment-08-PCA-Data-Mining-Wine-
Assignment-08-PCA-Data-Mining-Wine data. Perform Principal component analysis and perform clustering using first 3 principal component scores (both heirarchial and k mean clustering(scree plot or elbow curve) and obtain optimum number of clusters and check whether we have obtained same number of clusters with the original data (class column we have ignored at the begining who shows it has 3 clusters)Jupyter Notebook
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Assignment-2-Set2-Q5-Basic-Statistic-Level-2-
Consider a company that has two different divisions. The annual profits from the two divisions are independent and have distributions Profit1 ~ N(5, 3^2) and Profit2 ~ N(7, 4^2) respectively. Both the profits are in $ Million. Answer the following questions about the total profit of the company in Rupees. Assume that $1 = Rs. 45 A. Specify a Rupee range (centered on the mean) such that it contains 95% probability for the annual profit of the company. B. Specify the 5th percentile of profit (in Rupees) for the company C. Which of the two divisions has a larger probability of making a loss in a given year?Jupyter Notebook
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Assignment-1-Q22-Basic-Statistics-Level-1-
Q 22) Calculate the Z scores of 90% confidence interval,94% confidence interval, 60% confidence interval for Adipose Tissue (AT) and Waist Circumference(Waist) from wc-at data setJupyter Notebook
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Assignment-03-Q1-Hypothesis-Testing-
A F&B manager wants to determine whether there is any significant difference in the diameter of the cutlet between two units. A randomly selected sample of cutlets was collected from both units and measured? Analyze the data and draw inferences at 5% significance level. Please state the assumptions and tests that you carried out to check validity of the assumptions. Cutlets.csvJupyter Notebook
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Assignment-1-Q21_a-Basic-Statistics-Level-1-
Q 21) Check whether the data follows normal distribution a) Check whether the MPG of Cars follows Normal DistributionJupyter Notebook
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P34.-Unsupervised-ML---t-SNE-Data-Mining-Cancer-
Unsupervised-ML-t-SNE-Data-Mining-Cancer. Import Libraries, Import Dataset, Convert data to array format, Separate array into input and output components, TSNE implementation, Cluster VisualizationJupyter Notebook
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41
NN_Hyperparameter-Tuning
Tuning of Hyperparameters :- Batch Size and Epochs. Tuning of Hyperparameters:- Learning rate and Drop out rate. Tuning of Hyperparameters:- Activation Function and Kernel Initializer. Tuning of Hyperparameter :-Number of Neurons in activation layer. Training model with optimum values of Hyperparameters.Jupyter Notebook
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42
Assignment-03-Q3-Hypothesis-Testing-
Chi2 contengency independence test. Assume Null Hypothesis as Ho: Independence of categorical variables (male-female buyer rations are similar across regions (does not vary and are not related) Thus Alternate Hypothesis as Ha: Dependence of categorical variables (male-female buyer rations are NOT similar across regions (does vary and somewhat/significantly related)Jupyter Notebook
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Assignment-06-Logistic-Regression
Assignment-06-Logistic-Regression. Output variable -> y y -> Whether the client has subscribed a term deposit or not Binomial ("yes" or "no") Attribute information For bank dataset Input variables: # bank client data: 1 - age (numeric) 2 - job : type of job (categorical: "admin.","unknown","unemployed","management","housemaid","entrepreneur","student", "blue-collar","self-employed","retired","technician","services") 3 - marital : marital status (categorical: "married","divorced","single"; note: "divorced" means divorced or widowed) 4 - education (categorical: "unknown","secondary","primary","tertiary") 5 - default: has credit in default? (binary: "yes","no") 6 - balance: average yearly balance, in euros (numeric) 7 - housing: has housing loan? (binary: "yes","no") 8 - loan: has personal loan? (binary: "yes","no") # related with the last contact of the current campaign: 9 - contact: contact communication type (categorical: "unknown","telephone","cellular") 10 - day: last contact day of the month (numeric) 11 - month: last contact month of year (categorical: "jan", "feb", "mar", ..., "nov", "dec") 12 - duration: last contact duration, in seconds (numeric) # other attributes: 13 - campaign: number of contacts performed during this campaign and for this client (numeric, includes last contact) 14 - pdays: number of days that passed by after the client was last contacted from a previous campaign (numeric, -1 means client was not previously contacted) 15 - previous: number of contacts performed before this campaign and for this client (numeric) 16 - poutcome: outcome of the previous marketing campaign (categorical: "unknown","other","failure","success") Output variable (desired target): 17 - y - has the client subscribed a term deposit? (binary: "yes","no") 8. Missing Attribute Values: NoneJupyter Notebook
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Mysql-Students-table
Mysql-Students-table
1
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Mysql-date-time
Mysql-date-time
1
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Datascience_python
Python codeJupyter Notebook
1
47
Visualization-Mat_Seaborn
Visualization using Matplotlib and SeabornJupyter Notebook
1
48
Decision-Tree
Decision-TreeJupyter Notebook
1
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Model-Validation-Methods
Model-Validation-MethodsJupyter Notebook
1
50
Basics-of-R-1
Basics-of-R-Tutorial 1R
1
51
Mysql-Data-Manipulation
Mysql-Data-Manipulation
1
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R1
R Basics Tutorial-1R
1
53
P03.-Pandas-3
Understanding Pandas, Visualization using Matplotlib, Plotting subplotsJupyter Notebook
1
54
R_basics-homework-5_sept
R_basics - Visualizing Air Quality dataR
1
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Hypothesis-Test
Hypothesis-Test in pythonJupyter Notebook
1
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Ridge_Lasso_ElasticNet
Model Building and Testing using Ridge, Lasso and ElasticNet MethodsJupyter Notebook
1
57
DB-Scan
DB-ScanJupyter Notebook
1
58
Bagging-boosting-stacking
Bagging-boosting-stackingJupyter Notebook
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59
A15-Aczel-problems-practice-1-78-1-79-
Solution to Aczel problems practice (1-78, 1-79)Jupyter Notebook
1
60
R_basics-homework
R_basics FunctionsR
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Simple-linear-Reg-1
Simple-linear-Reg-1Jupyter Notebook
1
62
Mysql-practice-tables
Mysql-practice-tables
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Hierarchical-Clustering
Hierarchical-ClusteringJupyter Notebook
1
64
R2
R2 - Decision Making statements in RR
1
65
R3
R3 - Joins and Appling Functions in RR
1
66
Confidence-Interval
Confidence-IntervalJupyter Notebook
1
67
KNN
K Nearest Neighbours in PythonJupyter Notebook
1
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R_basics_calc-2
R code 2R
1
69
Classification_Case_study
Classification Project: Sonar rocks or minesJupyter Notebook
1
70
R-code-1a
R-code-1aR
1
71
A8-Aczel-problems-practice-1-48-1-51-1-53-
Jupyter Notebook
1
72
P14.-Confidence-Interval-for-Stocks
Find confidence intervals for Beml and Glaxo stocks. Confidence Interval EstimateJupyter Notebook
1
73
A10-Aczel-problems-practice-1-62-1-63-1-64-1-65-
Fortune published a list of the 10 largest “green companies”—those that follow environmental policies. Their annual revenues, in $ billions, are given below. Find the mean, variance, and standard deviation of the annual revenues.Jupyter Notebook
1
74
A5-Aczel-problems-practice-1-17-1-23-1-35-
Data: 23, 26, 29, 30, 32, 34, 37, 45, 57, 80, 102, 147, 210, 355, 782, 1209Jupyter Notebook
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Hypothesis-testing
Hypothesis Testing in PythonJupyter Notebook
1
76
A17-Aczel-problems-practice-1-82-1-83-
Solution to Aczel problems practice (1-82, 1-83)Jupyter Notebook
1
77
Day-3
R - Joins, Basic functions, and If else statements in RR
1
78
R-code-2
R-code-2R
1
79
P04.-Matplotlib-Visualization
Plotting two different categories- box plot, barplot, histogram. Plotting single category- Pie chart, bar chart. Different Plots- Scatter Plot, Histogram, Box Plot, Violin PlotJupyter Notebook
1
80
P07.-Chebyshev-s-practice
Chebyshev's Theorem 3/4th or 75% of observations lie 2 Standard deviations of mean i.e. mean+2SD and mean-2SDJupyter Notebook
1
81
Basics-of-R3
Basics-of-R Tutorial 3R
1
82
P29.-Unsupervised-ML---Hierarchical-Clustering-Univ.-
Unsupervised-ML---Hierarchical-Clustering-University Data. Import libraries, Import dataset, Create Normalized data frame (considering only the numerical part of data), Create dendrograms, Create Clusters, Plot Clusters.Jupyter Notebook
1
83
P01.-Pandas-1
Understanding Pandas, Importing datasets, Deriving Attributes, Performing StatisticsJupyter Notebook
1
84
Anova
AnovaJupyter Notebook
1
85
Matplotlip
MatPlotlib Python codesJupyter Notebook
1
86
P02.-Pandas-2
Understanding Pandas, Groupby Function, Filtering FunctionJupyter Notebook
1
87
A4-Aczel-problems-practice-1-16-1-22-1-34-
Following are the numbers of daily bids received by the government of a developing country from firms interested in winning a contract for the construction of a new port facilityJupyter Notebook
1
88
Datascience_R
R code TutorialR
1
89
Reviews_Classification_Naive_Bayes
Data Cleaning, N-gram, WordCloud, Applying naive bayes for classification, Using TFIDFJupyter Notebook
1
90
EDA2
Exploratory Data Analysis Part-2Jupyter Notebook
1
91
Normal-Distribution
Normal-DistributionJupyter Notebook
1
92
Association-Rules
Association-RulesJupyter Notebook
1
93
Probability-Calc
Probability Calculations for Normal distributionJupyter Notebook
1
94
P08.-Box-Plot-Practice
Box Plot - using dataframe in pandas Inserting Minor and Major gridlines Deriving LQ, UQ, IQR, Upper Whisker and Lower Whisker lengthJupyter Notebook
1
95
Forecasting_Data_Driven_Models
Splitting data, Moving Average, Time series decomposition plot, ACF plots and PACF plots, Evaluation Metric MAPE, Simple Exponential Method, Holt method, Holts winter exponential smoothing with additive seasonality and additive trend, Holts winter exponential smoothing with multiplicative seasonality and additive trend, Final Model by combining train and testJupyter Notebook
1
96
A7-Aczel-problems-practice-1-41-1-42-1-43-1-44-1-45-
Jupyter Notebook
1
97
A12-Aczel-problems-practice-1-71-1-72-1-73-
Solution to Aczel problems practice (1-71, 1-72, 1-73)Jupyter Notebook
1
98
R_basics-homework-earthquake
R_basics- Earth Quake dataR
1
99
Inferential-Statistics
Inferential Statistics using Confidence IntervalJupyter Notebook
1
100
Forecasting_Model_based_methods
Splitting data into Linear Model, Exponential, Qaudratic, Additive seasonality , Additive Seasonality Quadratic , Multiplicative Seasonality, Multiplicative Additive Seasonality. Prediction for new time periodJupyter Notebook
1