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Guest
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This is the Full Problem b/c I'm still having trouble with the whole thing...I just need someone to refresh my memory for me...it's long and has many parts so here it goes...this is how it starts out...and u will need a ti-83 calculator to do these problems
year time population
1960 0 54,947
1970 10 83,692
1980 20 179,752
1990 30 287,529
2000 40 365,196
1). Find the quadratic model using the regression procedure
I got f(x)-78.26x^2 + 5113.04x + 45, 007.77
2). Verify the accuracy of the function by completing the following table
1960 0 45,008 (these are my answers)
1970 10 103,964
1980 20 178, 573
1990 30 268, 833
2000 40 374, 745
3).Extrapolate into the past by completing the follwing table
1960 0 45,008 ( these are my answers )
1950 -10 1, 703.4
1940 -20 -25,949.03
1930 -30 -37,943.43
1920 -40 -34,297.83
4). Does this extrapolation seem valid ?
I said No
5).Extrapolate into the future by completing the follwing table
1960 0 45,008 (these are my answers )
2000 40 374,745
2010 50 496,310
2020 60 633,526
2030 70 786,395
6).Does this extrapolation seem valid
I said yes
7).Use algebra(quadratic formula) to determine when Seminole County Florida will have a population of 500,000 people.
I dont have an answer for this one ?
8). Use the data values for the years 1940 to 2030 to define a reasonable window that shows the relevant features of the graph and gives it a nice shape.
Don't have an answer
So if anyone could check my answers and help with the ones I didn't get I would greatly appreciate it
year time population
1960 0 54,947
1970 10 83,692
1980 20 179,752
1990 30 287,529
2000 40 365,196
1). Find the quadratic model using the regression procedure
I got f(x)-78.26x^2 + 5113.04x + 45, 007.77
2). Verify the accuracy of the function by completing the following table
1960 0 45,008 (these are my answers)
1970 10 103,964
1980 20 178, 573
1990 30 268, 833
2000 40 374, 745
3).Extrapolate into the past by completing the follwing table
1960 0 45,008 ( these are my answers )
1950 -10 1, 703.4
1940 -20 -25,949.03
1930 -30 -37,943.43
1920 -40 -34,297.83
4). Does this extrapolation seem valid ?
I said No
5).Extrapolate into the future by completing the follwing table
1960 0 45,008 (these are my answers )
2000 40 374,745
2010 50 496,310
2020 60 633,526
2030 70 786,395
6).Does this extrapolation seem valid
I said yes
7).Use algebra(quadratic formula) to determine when Seminole County Florida will have a population of 500,000 people.
I dont have an answer for this one ?
8). Use the data values for the years 1940 to 2030 to define a reasonable window that shows the relevant features of the graph and gives it a nice shape.
Don't have an answer
So if anyone could check my answers and help with the ones I didn't get I would greatly appreciate it