Tableau 201: How to Make a What-If Analysis Using Parameters. 17. Tableau 201: How to Make a What-If Analysis Using Parameters. Parameters are one of the most powerful tools available in Tableau for exploring your data and providing interactivity to your end users. The best way to think of parameters is that they act as wildcards.
The United States has invested almost $78 billion in the International Space Station (ISS or Station) over the last 21 years, and going forward, NASA plans to spend between $3 and $4 billion annually to maintain and operate the Station, including transportation for crew and cargo.1 In a May 2014 report,
The International Space Station is a massive structure, having more than enough living space for a crew of six. The International Space Station weighs about 1 million pounds. It was occupied by its first crew in 2000, roughly two years after the station's first part went into space. The space station's source for electrical power is the sun as the station is equipped with solar arrays.