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Task/Statistics-Basic/Sidef/statistics-basic.sidef

@@ -0,0 +1,26 @@
+func generate_statistics(n) {
+    var(sum=0, sum2=0);
+    var hist = 10.of(0);
+
+    n.times {
+        var r = 1.rand;
+        sum += r;
+        sum2 += r**2;
+        hist[10*r] += 1;
+    }
+
+    var mean = sum/n;
+    var stddev = Math.sqrt(sum2/n - mean**2);
+
+    say "size: #{n}";
+    say "mean:   #{mean}";
+    say "stddev: #{stddev}";
+
+    var max = hist.max;
+    hist.range.each {|i|
+        printf("%.1f:%s\n", 0.1*i, "=" * 70*hist[i]/max);
+    }
+    print "\n";
+}
+
+[100, 1000, 10000].each {|n| generate_statistics(n) }