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    "# Levene's Test\n",
    "\n",
    "This example demonstrates how a levene test can be performed by using \n",
    "Daru::Vector and the Statsample::Test::Levene class.\n",
    " \n",
    "Levene's test is an inferential statistic used to assess the\n",
    "equality of variances for a variable calculated for two or more groups.\n",
    " \n",
    "#### References\n",
    " \n",
    "http://en.wikipedia.org/wiki/Levene%27s_test"
   ]
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     "text": [
      "variance a : 908.0444444444445\n",
      "variance b : 916.6666666666666\n",
      "\n",
      "\n",
      "Analysis 2015-06-03 23:40:13 +0530\n",
      "= Statsample::Test::Levene\n",
      "  Levene Test : F(1, 18) = 0.7781 , p = 0.3893\n",
      "\n"
     ]
    }
   ],
   "source": [
    "require 'statsample'\n",
    "\n",
    "Statsample::Analysis.store(Statsample::Test::Levene) do\n",
    "\n",
    "  a = Daru::Vector.new([1,2,3,4,5,6,7,8,100,10])\n",
    "  puts \"variance a : #{a.variance}\"\n",
    "  b = Daru::Vector.new([30,40,50,60,70,80,90,100,110,120])\n",
    "  puts \"variance b : #{b.variance}\\n\\n\"\n",
    "  summary(levene([a,b]))\n",
    "end\n",
    "   Statsample::Analysis.run_batch"
   ]
  }
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