pizza prices

pizza.ipynb

{
 "metadata": {
  "name": "",
  "signature": "sha256:63a1ea10f9e0e1ba944bca95f62e0f1c3aa3b18753e9019266007b7f45595e18"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Hack Nights Pizza"
     ]
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "I went through all my emails from pizza pizza in reverse chronological order and noted the amounts paid (tip not included):"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "pizza_payments = [55, 35, 30, 46, 38, 60, 77, 77, 57, 30, 56, 54, 51, 62, 57, 50, 35, 38, 33, 51, 62, 29, 34, 34, 57, 33, 45, 33, 33, 23, 29, 54, 69, 54, 48, 48, 52, 70, 70, 54, 54, 75, 40]"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 9
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "Here is a bar chart going back in time:"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%matplotlib inline\n",
      "import matplotlib.pyplot as plt"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 23
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "plt.bar(range(len(pizza_payments)), pizza_payments)\n",
      "plt.show()"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "metadata": {},
       "output_type": "display_data",
       "png": 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       "text": [
        "<matplotlib.figure.Figure at 0x7f39297fe450>"
       ]
      }
     ],
     "prompt_number": 24
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "Not super-interesting. No obvious trends.\n",
      "\n",
      "How about a histogram with $5 buckets:"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "plt.hist(pizza_payments, bins=20, range=(0, 100))\n",
      "plt.show()"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "metadata": {},
       "output_type": "display_data",
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       "text": [
        "<matplotlib.figure.Figure at 0x7f3930235dd0>"
       ]
      }
     ],
     "prompt_number": 20
    },
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "So we have like, big hack nights and small hack nights, at about \\$35 and \\$55. Or maybe Pizza Pizza has good specials and bad specials. Who knows.\n",
      "\n",
      "Well anyway here is probably the only useful information from this data:"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "average_payment = float(sum(pizza_payments)) / len(pizza_payments)\n",
      "print('$ {:.2f}'.format(average_payment))\n",
      "print('$ {:.2f} with tip'.format(average_payment + 5))"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "$ 48.65\n",
        "$ 53.65 with tip\n"
       ]
      }
     ],
     "prompt_number": 21
    }
   ],
   "metadata": {}
  }
 ]
}