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+ spaces around operators #14

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54 changes: 27 additions & 27 deletions notebooks/B3. Logistic Regression - Analysis.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -161,7 +161,7 @@
"collapsed": false,
"input": [
"# we add a column which indicates (True/False) whether the interest rate is <= 12 \n",
"dfr['TF']=dfr['Interest.Rate']<=12\n",
"dfr['TF'] = dfr['Interest.Rate'] <= 12\n",
"# inspect again\n",
"dfr.head()\n",
"# we see that the TF values are False as Interest.Rate is higher than 12 in all these cases"
Expand Down Expand Up @@ -355,9 +355,9 @@
"# statsmodels requires us to add a constant column representing the intercept\n",
"dfr['intercept']=1.0\n",
"# identify the independent variables \n",
"ind_cols=['FICO.Score','Loan.Amount','intercept']\n",
"ind_cols = ['FICO.Score', 'Loan.Amount', 'intercept']\n",
"logit = sm.Logit(dfr['TF'], dfr[ind_cols])\n",
"result=logit.fit()"
"result = logit.fit()"
],
"language": "python",
"metadata": {},
Expand Down Expand Up @@ -449,10 +449,10 @@
"collapsed": false,
"input": [
"def pz(fico,amt,coeff):\n",
" # compute the linear expression by multipyling the inputs by their respective coefficients.\n",
" # note that the coefficient array has the intercept coefficient at the end\n",
" z = coeff[0]*fico + coeff[1]*amt + coeff[2]\n",
" return 1/(1+exp(-1*z))"
" # compute the linear expression by multipyling the inputs by their respective coefficients.\n",
" # note that the coefficient array has the intercept coefficient at the end\n",
" z = coeff[0] * fico + coeff[1] * amt + coeff[2]\n",
" return 1 / (1 + exp(-1 * z))"
],
"language": "python",
"metadata": {},
Expand All @@ -471,7 +471,7 @@
"cell_type": "code",
"collapsed": false,
"input": [
"pz(720,10000,coeff)"
"pz(720, 10000, coeff)"
],
"language": "python",
"metadata": {},
Expand Down Expand Up @@ -499,11 +499,11 @@
"source": [
"Now we are going to try (fico, amt) pairs as follows:\n",
"\n",
"* 720,20000\n",
"* 720,30000\n",
"* 820,10000\n",
"* 820,20000 \n",
"* 820,30000 "
"* 720, 20000\n",
"* 720, 30000\n",
"* 820, 10000\n",
"* 820, 20000 \n",
"* 820, 30000 "
]
},
{
Expand All @@ -513,17 +513,17 @@
"print(\"Trying multiple FICO Loan Amount combinations: \")\n",
"print('----')\n",
"print(\"fico=720, amt=10,000\")\n",
"print(pz(720,10000,coeff))\n",
"print(pz(720, 10000, coeff))\n",
"print(\"fico=720, amt=20,000\")\n",
"print(pz(720,20000,coeff))\n",
"print(pz(720, 20000, coeff))\n",
"print(\"fico=720, amt=30,000\")\n",
"print(pz(720,30000,coeff))\n",
"print(pz(720, 30000, coeff))\n",
"print(\"fico=820, amt=10,000\")\n",
"print(pz(820,10000,coeff))\n",
"print(pz(820, 10000, coeff))\n",
"print(\"fico=820, amt=20,000\")\n",
"print(pz(820,20000,coeff))\n",
"print(pz(820, 20000, coeff))\n",
"print(\"fico=820, amt=30,000\")\n",
"print(pz(820,30000,coeff))\n"
"print(pz(820, 30000, coeff))\n"
],
"language": "python",
"metadata": {},
Expand Down Expand Up @@ -563,7 +563,7 @@
"cell_type": "code",
"collapsed": false,
"input": [
"pz(820,63000,coeff)"
"pz(820, 63000, coeff)"
],
"language": "python",
"metadata": {},
Expand Down Expand Up @@ -593,14 +593,14 @@
"Try the following pairs of (fico, amt) values and plug them into the pz() function mimicing the syntax below. What insight does this give you?\n",
"\n",
"\n",
"* 820,50000\n",
"* 820,60000\n",
"* 820,70000\n",
"* 820,63000\n",
"* 820,65000\n",
"* 820, 50000\n",
"* 820, 60000\n",
"* 820, 70000\n",
"* 820, 63000\n",
"* 820, 65000\n",
"\n",
"Place your cursor on the cell below. Hit shift-enter to recreate the result. \n",
"Then click Insert->Cell Below via the Insert menu dropdown. This creates a new empty cell.\n",
"Then click Insert -> Cell Below via the Insert menu dropdown. This creates a new empty cell.\n",
"Now enter the pz() function with the next pair of values. Hit shift-enter.\n",
"Repeat this till the end of the list of values.\n",
"Answer the question above, if possible.\n",
Expand All @@ -611,7 +611,7 @@
"cell_type": "code",
"collapsed": false,
"input": [
"pz(820,50000,coeff)"
"pz(820, 50000, coeff)"
],
"language": "python",
"metadata": {},
Expand Down