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anonymous
 one year ago
The graph below shows the relationship between the number of months different students practiced baseball and the number of games they won:
Part A: What is the approximate yintercept of the line of best fit and what does it represent? (5 points)
Part B: Write the equation for the line of best fit in slopeintercept form and use it to predict the number of games that could be won after 13 months of practice. (5 points)
anonymous
 one year ago
The graph below shows the relationship between the number of months different students practiced baseball and the number of games they won: Part A: What is the approximate yintercept of the line of best fit and what does it represent? (5 points) Part B: Write the equation for the line of best fit in slopeintercept form and use it to predict the number of games that could be won after 13 months of practice. (5 points)

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0any help would be appreciated

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Nnesha @Astrophysics

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1do you see what the yintercept is?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well i know that the yintercept is the place where a line crosses the yaxis

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1which is where in this case?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is it the second dot ? ike 0,1?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1focus on the line and not the dot. The dot is a bit below the line

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1So it's probably around (0,1.5) maybe

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1do you agree that the yintercept is around (0,1.5) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0well i said 1 so why is it 1.5?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I zoomed in and saw that the point at (0,1) is slightly below the place where the line crosses the y axis

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1438992422113:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1438992436303:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1438992467887:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh alright i see now

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what does it represent?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the numbers of games they won?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0is that what it means

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what is the line of best fit trying to do?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1we have a bunch of points and the line of best fit is trying to get as close as possible to each point, right?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1the line of best fit is a tool used to predict y scores based on given x values if we know the number of months practiced, then we can use it to predict the number of games one based on the regression line

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what is the x value at the yintercept?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1when the number of months of practice is 0, the predicted number of games won would be around 1.5 that's what the yintercept tells us

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thanks i know ive been hard work haha could you help me with the other part

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you'll first need to write down all of the points shown on the graph make one big list of points

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1once you have your list, paste it into http://www.alcula.com/calculators/statistics/linearregression/ to calculate the regression line

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this will give me the equation?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1yeah it should be calculated/shown after you hit the "submit data" button

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it just shows the graph ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I think the equation is shown above the graph

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1above where it says "Regression line equation:"

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0/.Sample size: 10 Mean x (x̄): 4.8 Mean y (ȳ): 10.85 Intercept (a): 1.9772727272727 Slope (b): 1.8484848484848 Regression line equation: y=1.9772727272727+1.8484848484848x

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1so y=1.9772727272727+1.8484848484848x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thats the equation ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1I was pretty close. 1.97 is close to 1.5 well closer to 2 actually

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so do i change part a to 1.97

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1no that was an estimate based on just looking at the graph

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1it doesn't have to be perfect

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh alright thanks bunches
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