Projects and program code in R

Dataset - (a) dognition_data.csv [available in this repository]
(b) nesarc.csv - available at this link https://d396qusza40orc.cloudfront.net/phoenixassets/data-management-visualization/nesarc_pds.csv

1. Program - rgraphs.R
   Program Description - Create Scatter plots, histograms, barplots, boxplots, piecharts and densityplots.

2. Program - descriptive_stats.R
   Program Description - Basic Descriptive and Inferential statistics for data exploration, including:
   a. Measures of location & scale for quantitative variables.
   b. Frequency & contingency tables
   c. chi-square tests and similar tests for categorical variables.
   d. correlation coefficients
   

3. Program - clustering.R
   Description - program to create Pie-chart & radar-type Clustering Chart

4. Program - prodn_clustering.R
   Description - create a scatterplot and divide into logical segments with naming. Great for visualization of customer / product segmentation!

5. Program - anova.R
   Description - anova calculations and visualization

6. Program - chi-sq.R
   Description - R code for chi-square test of independence, Fisher test, Cochran–Mantel–Haenszel chi-square test. Visualization using mosaic function.

7. Program - correlation.R
   Description - working program in R for Kendall correlation, Pearson correlation, Spearman correlation. Visualization using corrgram function.

8. Program - regression_basic.R
   Description - Linear and multiple Regression. Visualization using scatterplotMatrix(), qqPlot() and hat.plot()