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2. Consider the following output concerning the model's lift (4 marks each): Obs % 1s by # 1s by # 15 K 1s # 15
2. Consider the following output concerning the model's lift (4 marks each): Obs % 1s by # 1s by # 15 K 1s # 15 # 1s extra Lift model model detected detected detected detected randomly by model by model vs. random 10 100 21 37.619 79 58 3.76190 121 N 20 200 42 57.619 79 2.88095 w 30 300 63 73.333 154 91 2.44444 40 400 84 84.286 177 93 2.10714 un 50 500 105 91.905 193 88 1.83810 60 600 126 95.714 201 75 1.59524 70 700 147 99.524 209 62 1.42177 80 800 168 100.000 210 42 1.25000 90 900 189 100.000 210 21 1.11111 10 100 1000 210 100.000 210 O 1.00000 (a) How many observations were used to obtain this output? (b) How many of those observations have Y = 1? (c) Explain what the 100% in column 5 row 8 means? (d) Explain how the lift of 2.44444 in the last column is calculated and what it means. (e) Explain what the number 88 in column 7 row 5 means
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