Question

0 Using a discount travel website, the prices for a one-way fight from one city to various other cities were recorded. The following table gives the distances from the city to 14 selected cities, along with the airfare to each of these cities Complete parts (a) through (d) below. Distance, Price City x (miles) a. Plot the data. De the data points lie in a linear pattern? y (dollars) А 805 191 OA OB B 184 с 1203 195 100 3000 D 1232 245 E 2790 314 F 1203 200 G 891 151 H 95 291 2407 221 Oc 2897 322 K 2707 287 3000 L 947 150 M N 2804 Do the points in a linear paten? NA Click to select your answers

Answer 1

Scatter plot 400 y = 0.04x + 167.70 R? -0.38 350 300 250 200 150 100 50 0 0 500 1000 1500 2000 2500 3000 3500

Use excel to draw scatter plot . Right click to add trend line and equation

Yes The points have aligned along a straight line from bottom left to top right. b. Correlation coefficient = 0.6178 used excel function correl(data) Cost of a ticket te nd to go up with distance flown because the correlatio n is positive Yes Least square line is y = = 0.04x167.70 outlier is city H where distance is 95 It must be an en We cannot talk about destination is popular or not as no information is given regarding that. 95km is not distance to fly