Often the raw data itself is not normally distributed, but the logarithm of the data may in fact be a normally distributed set. To test if your numbers are log-normal, take the logarithm of each point, then apply one or all of the tests above.
Because labor costs vary across the country, the cost of adding Hardie board siding to a home depends on location. The Bureau of Labor Statistics show that as of May 2010, installers made a mean $21.10 per hour, with lows of $11.85 and highs of $34.45.
With the price of the granite material included, it could cost anywhere between $2,000 and $4,000 to have a granite countertop installed. This cost may also include a backsplash and cutouts for your sink or bar area. It depends on your installer, so be sure your ask when you getting a quote from your countertop professional.