The table shows the number of blogs, in millions, in existence every six months. Mountib 1___7____13____19___25___31 Bolys 0,7__2_____4_____8___16___31 ​Using the calculator exponential regression tool, find a function that models the data.

ediculeN

ediculeN

Answered question

2021-06-04

The table shows the number of blogs, in millions, in existence every six months.
Mountib 1___7____13____19___25___31
Bolys 0,7__2_____4_____8___16___31
​Using the calculator exponential regression tool, find a function that models the data.

Answer & Explanation

sweererlirumeX

sweererlirumeX

Skilled2021-06-05Added 91 answers

The procedures for using your calculator will differ depending on the model you are using. The procedures here are for the Tl-83 and Tl-84 calculators.
1. Press STAT and then press ENTER. 
2. Enter the data values for the months under L1 by typing the number, pressing enter, typing the next number, pressing enter, and so on. Then enter the corresponding blogs values under L2. 
3. Press STAT, use the arrow key to go to the CALC menu, use the arrow key to scroll to ExpReg then press ENTER. 
4. The calculator will display the values for terms a and b of the regression once you have pressed ENTER five times.
This is a display of the calculator's output. Rounding the values of a and b to four significant digits gives a~0.7378 and b~1.131. The exponential model is then y=abx=0.7348(1.131)x
[Pic] 
y=abx 
a=.7378289689 
b=1.131179472 
r2=.993216496 
r=.9966024764

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