initial commit for YZM509

YZM509/nb/01_intro_statiscs.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "source": [
+    "* Mean (Ortalama)\n",
+    "* Median (En orta değer) (Mean of the two middle values)\n",
+    "* Mode: the most common value in data"
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "outputs": [],
+   "source": [
+    "dizi = [37, 40, 1, 2, 3, 3, 4, 5, 15, 20, 4, 3]"
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "outputs": [],
+   "source": [
+    "def mean1(a):\n",
+    "    return sum(a) / float(len(a))\n",
+    "\n",
+    "import functools\n",
+    "def mean2(a):\n",
+    "    return functools.reduce(lambda x, y: x + y, a) / float(len(a))\n",
+    "\n",
+    "print(mean1(dizi))\n",
+    "print(mean2(dizi))"
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "outputs": [],
+   "source": [
+    "def median(ls):\n",
+    "    # orjinla diziyi bozmayalım diye kopyasını alallım\n",
+    "    data = sorted(ls)\n",
+    "\n",
+    "    # // --> Floor division\n",
+    "    mid = len(data) // 2\n",
+    "\n",
+    "    # ~ --> bitwise not\n",
+    "    # https://www.w3schools.com/python/trypython.asp?filename=demo_oper_not\n",
+    "    med = (data[mid] + data[~mid]) / 2\n",
+    "    return med\n",
+    "\n",
+    "print(median(dizi))\n",
+    "\n",
+    "import statistics\n",
+    "print(statistics.median(dizi))\n",
+    "statistics.mode(dizi)"
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  },
+  {
+   "cell_type": "markdown",
+   "source": [
+    "Varyans = Topla((Her terim - ortalama))^2 / n\n",
+    "* Varyans, verinin ortalamadan ne kadar uzaksadığının / yakınsadığının ölçüsü\n",
+    "* Veri örneğinin varyansı için, yine tüm değerlerin ortalaması kullanılır ama n-1'e bölünür.\n",
+    "\n",
+    "Standart Sapma = karekök(varyans)"
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.10"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 1
+}