This activity is worth two sets of homework points.
For practice cleaning data,

This activity is worth two sets of homework points.
For practice cleaning data, please go to this web pageLinks to an external site. and click on “Export” in the upper right hand side to download the data.
Then, determine the sample size you would need to evaluate the data set’s quality. Please show your calculations.
Randomly select the records you will evaluate.
Evaluate the data for outliers and explain how you did that (using data visualizations? How did you set it up?)
Evaluate the data for missing values. Can you determine the cause for the missing values? Do they seem to happen in certain situations? How many records have missing values? How are you going to handle this?
What is your overall evaluation of the quality of the data (please write one paragraph).
https://data.sfgov.org/Economy-and-Community/Registered-Business-Locations-San-Francisco/g8m3-pdis/about_data