I think the easiest method is to calculate the skewness and kurtosis of your data. If both are near enough to zero, it's normal. To get the score one method often used is the Jarque-Beta test which gives you the p-value given the calculated skewness and kurtosis. share | cite | improve this answer.
Note that surface texturing or skim coating is NOT included in this estimate. For a basic 500 square feet project in zip code 47474, the benchmark cost to Hang Drywall ranges between $1.43 - $1.76 per square foot* .To estimate costs for your project: 1.or a basic 500 square feet project in zip code 47474, the benchmark cost to Hang Drywall ranges between $1.43 - $1.76 per square foot* . To estimate costs for your project:
1 If they do charge by the sheet, it can cost around $20 to $55 per sheet to hang. 2  This will include the finishing. 3  According to Drywall101.com, most drywall contractors will price remodel or construction projects needing more than 50 sheets of drywall based on their standard square footage rate.