h2 - STT 200 /dikong/F08 Homework #2 Sections 01, 02, 03,...

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STT 200 /dikong/F08 Homework #2 Sections 01, 02, 03, 04, 21, 22, 23, 24 DUE ON Friday, February 08, 2008 NAMES (last, first)/PID _________________________________________ Number of points for each problem is in brackets [ ]. QUESTION A The table below lists air fares from Atlanta to selected cities. 1. [5] Make a scatterplot for these data Scatterplot 0 50 100 150 200 250 300 350 400 0 500 1000 1500 2000 2500 1. [5] Find the correlation (coefficient) for these data. (show work – see class example) Atlanta to: Distance ( x ) Fare ( y ) Baltimore 568 219 Boston 933 222 Dallas 720 249 Denver 1190 308 Detroit 602 249 Kansas City 683 141 Las Vegas 1719 252 Miami 589 229 Memphis 327 183 Minneapolis 894 209 New Orleans 419 199 NY 749 248 Okla City 749 301 Orlando 392 238 Philadelphia 657 205 St Louis 461 232 Salt Lake 1565 371 Seattle 2150 343
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2. [5] Compute R 2 = _________ and explain what R 2 means in context. 3.
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h2 - STT 200 /dikong/F08 Homework #2 Sections 01, 02, 03,...

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