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:
The cost to hang and finish drywall is about $14 a sheet when the homeowner does the work themselves; about $3 of this cost is for finishing. The cost to hang and finish a sheet of drywall is around $30 when done by a contractor; about $6 of this cost is for finishing; about $3 for finishing supplies and about $3 for labor.