{"text_format":"2","workbook":"xls","n_sheets":3,"sheets":["Sheet1","Sheet2","Sheet3"],"not_rendered":{"charts":0,"images":0,"macros":0,"external_links":0,"defined_names":0,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"run_cost":"one","rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900","formulas":"cached_only"}

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["All Cases"]
["year","n","mean","sd","sum(x)","sum(x^2)"]
[2002,610,9.2,1.95,5612,53946.1225]
[2007,297,5.48,1.8,1627.5600000000002,9878.068800000003]
[]
["Professionals"]
["year","n","mean","sd","sum(x)","sum(x^2)"]
[2002,425,9.02,2.03,3833.5,36325.431599999996]
[2007,136,5.32,1.92,723.52,4346.7904]
[]
["Non-Professionals"]
["year","n","mean","sd","sum(x)","sum(x^2)"]
[2002,185,9.613513513513514,1.6860313515965208,1778.5,17620.6909]
[2007,161,5.6151552795031066,1.6862558767837041,904.0400000000002,5531.278400000003]

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