Data retrieved from United.com for a one way flight booked for 01 June 2014 originating at Chicago's O'Hare airport (ORD for "Orchard Airfield, the original name of the airport). Quotes obtained on 18 February 2014
From
To
Distance (km)
Price ($)
ORD
IAH
1500
247
ORD
LAX
2800
169
ORD
HNL
6900
524
ORD
MAJ
10800
1575
ORD
PNI
12300
1588
_________ Calculate the sample size n.
______________ Calculate the slope of the linear regression trend line for the data. Keep at least three or four decimal places. Avoid rounding.
______________ Calculate the y-intercept of the linear regression for the data. Include the sign.
______________ Is the relationship positive, negative, or neutral?
______________ Calculate the correlation coefficient r for the data.
______________ Is the correlation none, weak/low, moderate, strong/high, or perfect?
______________ Determine the coefficient of determination r².
______________ What percent in the variation in the distance accounts for the variation in the price?
______________ Use the slope and intercept to predict the price for a distance of 5000 kilometers.
______________ Use the slope and intercept to predict the distance for a price of $1100.
______________ Does the data indicate that the relationship is linear?
