After the large eruption of Mount St. Helens in 1980, gas samples from the volcano were taken by sampling the downwind gas plume. The unfiltered gas samples were passed over a gold-coated wire coil to absorb mercury (Hg) present in the gas. The mercury was recovered from the coil by heating it and then analyzed. In one particular set of experiments scientists found a mercury vapor level of 1800 ng of Hg per cubic meter in the plume at a gas temperature of 
Statistics 200 Week One Notes Writing in red are examples of ways to remember what terms go together and what the terms mean. Writing in green are examples of the terms. Chapter One and Two Terms Statistics: The science of learning from data Quantitative Data: Data that is numerical (Quantity = Numbers) Qualitative Date: Data that is categorical (Quality = Category) Inferential Statistics: Methods of drawing conclusions about a population based on information from a sample of the population (Infer = Draw Conclusions) The Six W’s: Who, What, When, Where, Why, and How o Who: Describes the thing that is surveyed o What: Describes the specific characteristics of the who that are measure
