//Constructor that takes an array of TreeNodes as an argument
public NormalDistribution(AST.Range[] range_nodes, Excel.Application app)
{
//turn the dictionary into an Excel.Range
Excel.Range r1 = range_nodes[0].GetCOMObject(app);
foreach (AST.Range range_node in range_nodes)
{
try //in a try-catch because Union malfunctioned in one observed case
{
r1 = app.Union(r1, range_node.GetCOMObject(app));
} catch { }
}
_cells = r1;
_size = r1.Count;
_mean = __mean();
_variance = __variance();
_standard_deviation = __standard_deviation();
_error = __error();
_ranked_errors = __rank_errors();
}
