Added assignment.md for visualizing distributions

Author: Vidushi-Gupta

3-Data-Visualization/R/10-visualization-distributions/assignment.md

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+# Apply your skills
+
+## Instructions
+
+So far, you have worked with the Minnesota birds dataset to discover information about bird quantities and population density. Practice your application of these techniques by trying a different dataset, perhaps sourced from [Kaggle](https://www.kaggle.com/). Build a R script to tell a story about this dataset, and make sure to use histograms when discussing it.
+## Rubric
+
+Exemplary | Adequate | Needs Improvement
+--- | --- | -- |
+A script is presented with annotations about this dataset, including its source, and uses at least 5 histograms to discover facts about the data. | A script is presented with incomplete annotations or bugs. | A script is presented without annotations and includes bugs.