Dow Jones

[Courtneyb022]

The Dow Jones Industrial Average (DJIA) is a measure of the strength of companies on the New York Stock Echange. The following table lists the value of the DJIA for nine years. Theres a table for this problem:

Year: (DJIA):
1980 839
1982 875
1984 1259
1986 1547
1988 1939
1990 2753
1992 3169
1994 3754
1996 5117

A. Since the plot of the data appears to be exponential in shape, find the exponential function, D(t).

B. Using the exponential regression function on your calculator, find the exponential function, D(t), using the data given in the table.

C. What is the value of the DJIA preditced for 2011 based on the function in part A? in part B? How do they compare?


******I was unsure on how to find the exponential function. Because in order to find part B and C, I would need to find part A first. Can anyone help?*********

 

[Deleted member 4993]

The Dow Jones Industrial Average (DJIA) is a measure of the strength of companies on the New York Stock Echange. The following table lists the value of the DJIA for nine years. Theres a table for this problem:

Year: (DJIA):
1980 839
1982 875
1984 1259
1986 1547
1988 1939
1990 2753
1992 3169
1994 3754
1996 5117

A. Since the plot of the data appears to be exponential in shape, find the exponential function, D(t).

Exponential function looks like:

y = A * B[sup:1bxp0mas]C*x[/sup:1bxp0mas]

Where A, B and C are constants

B. Using the exponential regression function on your calculator, find the exponential function, D(t), using the data given in the table.

C. What is the value of the DJIA preditced for 2011 based on the function in part A? in part B? How do they compare?


******I was unsure on how to find the exponential function. Because in order to find part B and C, I would need to find part A first. Can anyone help?*********

 

[Courtneyb022]

I still don't get how you got that... please explain.

 

[Deleted member 4993]

I still don't get how you got that... please explain.

I don't get - what do you mean by "I still don't get how you got that... "

That is one of the definitions of exponential function. Just like linear function can be defined as: Ax + BY = C

Was it not explained in your textbook? in your class??

 

[Denis]

Just like linear function can be defined as: Ax + BY = C

Should be small "y" ; 22 minutes in the corner...

 

[Deleted member 4993]

Just like linear function can be defined as: Ax + BY = C

Should be small "y" ; 22 minutes in the corner...

Can I have an early release for good behavior?

 

[Denis]

Can I have an early release for good behavior?

Absolutely not. Y:y is a most serious sin; only the Pope can issue forgiveness.