a statistican fro the civil aeronautics bard whatn to be able to predict the freight charge for a standard-sized crate. the statistician takes a sample of 10 freight invoices from different companies. let d represent the distance in miles and let c represent the freight charge in dollars. make a scatter plot of the data below. describe the correlation. then find an equation for the least-squares line.
d= 500, 600, 900, 1000, 1200, 1400, 1500, 1700, 2200
c= 41, 55, 50, 70, 60, 78, 75,89, 105
i got the correlation and the scatter plot but i need help with the least-squares equation.
2006-10-11 11:29:29 · 5 answers · asked by Anonymous in Education & Reference ➔ Homework Help
Boy, I'd love to tackle this one but, I have to rearrange my sock drawer right now...
2006-10-11 11:31:58 · answer #1 · answered by martin h 6 · 0⤊ 0⤋
If you're using a TI 83 or 84, you can put your numbers in two lists. Make sure you put them in the correct order.
Then go to STAT, CALC, 4:LINREG(ax+b) hit your enter key.
Your screen will have LinReg(ax+b)
You put in L1,L2 or whatever your lists are and hit enter. The screen will have y = ax + b and tell you what a and b are.
If you don't use a graphing calculator, I'm not sure what to do. You might check your text book to see what it recommends.
y = .035x + 26.127
2006-10-11 18:43:46 · answer #2 · answered by PatsyBee 4 · 0⤊ 0⤋
Mmmmmm, Yea , ... ok . Tell him to send it thru mexico, they are always cheaper.
2006-10-11 18:32:33 · answer #3 · answered by pickemeeeeeeeeeeee 2 · 0⤊ 0⤋
sorry charlie I think i ditched that day
2006-10-11 18:32:11 · answer #4 · answered by wisewomaninthewest 2 · 0⤊ 0⤋
.035x+26.127
i am not sure though
2006-10-11 18:34:24 · answer #5 · answered by dreams 1 · 0⤊ 0⤋