spec/lib/easystats_spec.rb in easystats-0.3.2 vs spec/lib/easystats_spec.rb in easystats-0.4.0.rc1

@@ -10,83 +10,108 @@
     :median => nil,
     :mode => nil,
     :range => nil,
     :standard_deviation => nil,
     :sum => nil,
-    :variance => nil
+    :variance => nil,
+    :probability_distribution => nil
   }
 
+  build_stats_spec [1,1,1,2,2], {
+    :probability_distribution => {
+      1 => 0.6,
+      2 => 0.4
+    }
+  }
+
   build_stats_spec [0], {
     :mean => 0,
     :median => 0,
     :mode => 0,
     :range => 0,
     :standard_deviation => 0,
     :sum => 0,
-    :variance => 0.0
+    :variance => 0.0,
+    :probability_distribution => {0 => 1.0}
   }
 
   build_stats_spec [1], {
     :mean => 1,
     :median => 1,
     :mode => 1,
     :range => 0,
     :standard_deviation => 0,
     :sum => 1,
-    :variance => 0.0
+    :variance => 0.0,
+    :probability_distribution => {1 => 1.0}
   }
 
   build_stats_spec [1,2], {
     :mean => 1.5,
     :median => 1.5,
     :mode => nil,
     :range => 1,
     :standard_deviation => 0.707106781186548,
     :sum => 3,
-    :variance => 0.25
+    :variance => 0.25,
+    :probability_distribution => {1 => 0.5, 2 => 0.5}
   }
 
   build_stats_spec [1,2,3], {
     :mean => 2,
     :median => 2,
     :mode => nil,
     :range => 2,
     :standard_deviation => 1,
     :sum => 6,
-    :variance => 2.0 / 3.0
+    :variance => 2.0 / 3.0,
+    :probability_distribution => {1 => 0.3333333333333333, 2 => 0.3333333333333333, 3 => 0.3333333333333333} 
   }
 
   build_stats_spec [1,2,3,4], {
     :mean => 2.5,
     :median => 2.5,
     :mode => nil,
     :range => 3,
     :standard_deviation => 1.29099444873581,
     :sum => 10,
-    :variance => 1.25
+    :variance => 1.25,
+    :probability_distribution => {1 => 0.25, 2=>0.25, 3=> 0.25, 4=>0.25}
+
   }
 
+  build_stats_spec [1,1,2,2], {
+    :mean => 1.5,
+    :median => 1.5,
+    :mode => nil,
+    :range => 1,
+    :standard_deviation => 0.5773502691896257,
+    :sum => 6,
+    :variance => 0.25,
+    :probability_distribution => {1=>0.5, 2=>0.5}
+  }
 
   build_stats_spec [1,2,2,4], {
     :mean => 2.25,
     :median => 2,
     :mode => 2,
     :range => 3,
     :standard_deviation => 1.2583057392117916,
     :sum => 9,
-    :variance => 1.1875
+    :variance => 1.1875,
+    :probability_distribution => { 1 => 0.25, 2 => 0.5, 4 => 0.25 }
   }
 
-
   build_stats_spec [1,3,3,4], {
     :mean => 2.75,
     :median => 3,
     :mode => 3,
     :range => 3,
     :standard_deviation => 1.2583057392117916,
     :sum => 11,
-    :variance => 1.1875
+    :variance => 1.1875,
+    :probability_distribution => { 1 => 0.25, 3 => 0.5, 4=>0.25 }
   }
 
   build_stats_spec (0..100).to_a, {
     :mean => 50,
     :median => 50,
@@ -112,19 +137,21 @@
     :median => 0,
     :mode => nil,
     :range => 2,
     :standard_deviation => 1,
     :sum => 0,
-    :variance => 0.6666666666666666
+    :variance => 0.6666666666666666,
+    :probability_distribution => { -1 => 0.3333333333333333, 0 => 0.3333333333333333, 1 => 0.3333333333333333 }
   }
 
   build_stats_spec [1,2.5], {
     :mean => 1.75,
     :median => 1.75,
     :mode => nil,
     :range => 1.5,
     :standard_deviation => 1.0606601717798212,
     :sum => 3.5,
-    :variance =>0.5625
+    :variance =>0.5625,
+    :probability_distribution => { 1 => 0.5, 2.5=>0.5 }
   }
 end