For the following exercises, use a graphing utility to create a scatter diagram of the data given in the table: \begin{array {|c|c|c|c|c|c|c|c|c|} \hline x & 0 & 0.5 & 1 & 1.5 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 2.2 & 2.9 & 3.9 & 4.8 & 6.4 & 9.3 & 12.3 & 15 & 16.2 & 17.3 & 17.9

Chaya Galloway

Chaya Galloway

Answered question

2021-08-06

For the following exercises, use a graphing utility to create a scatter diagram of the data given in the table. Observe the shape of the scatter diagram to determine whether the data is best described by an exponential, logarithmic, or logistic model. Then use the appropriate regression feature to find an equation that models the data. When necessary, round values to five decimal places.
x00.511.52345678f(x)2.22.93.94.86.49.312.31516.217.317.9

Answer & Explanation

Leonard Stokes

Leonard Stokes

Skilled2021-08-07Added 98 answers

Step 1
Remember that regression analysis is the process of looking for a best fit of model for a set of data. This can be done on a graphing utility as follows:
1. Press [STAT], the input corresponging x-values of data in L1, and y-values of data in L2.
2. Use [STATPLOT] to observe a scatterplot of the data.
3. Press [STAT], then [CALC] then [ExpReg]/[LnReg]/[Logistic].
This will show you a function in either the form of an exponential, a logarithmic or a logistic model.
4. Graph this equation on the same window as the scatterplot to see if it fits the data.
Step 2
1. Press [STAT], the input corresponging x-values of data in L1, and y-values of data in L2.
2. Use [STATPLOT] to observe a scatterplot of the data.
image

Step 3
Based on the plots of the points, it can be exponential or logarithmic.
However, upon checking both regression analysis, the one with the closest value of r2 to 1 is exponential, hence, its formula is y=18.416631+7.54619e0.68374x The graph of which is below:
image Answer:y=18.416631+7.54619e0.68374x

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