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.
HardieBacker cement board was made to be easier to work with so that regardless of how you cut your board, the result is less debris. To make installation simpler, the 1/4 in. x 3 ft. x 5 ft. sheets have James Hardie's exclusive EZ Grid recessed fastener pattern to help with nail and screw placement.