ArcPy Statistics

import arcpy
arcpy.env.workspace = "Path\Geodatabase.gdb"
inTable = "Table"

# Create table stat1 with frequency on field1
arcpy.Frequency_analysis(inTable, "stat1", ["field1"])

# Create table stat2 with frequency on field1 and sum of feld3
arcpy.Frequency_analysis(inTable, "stat2", ["field1"], ["field3"])

# Create table stat3 with frequency on field1 and field2 and sum of feld3
arcpy.Frequency_analysis(inTable, "stat3", ["field1", "field2"], ["field3"])

import arcpy
arcpy.env.workspace = "Path\Geodatabase.gdb"
inTable = "Table"
outTable = os.path.join(arcpy.env.workspace , "stat1")
frequencyFields = ["field1", "field2"]
summaryFields = ["field3"]

arcpy.Frequency_analysis(inTable, outTable, frequencyFields, summaryFields)