Worksheet: Logarithmic Regression Model
In this worksheet, we will practice using the exponential regression features on a graphing calculator to model data exhibiting logarithmic growth or decay.
We can model data with nonlinear regression.
Which scatterplot shows data that could be modeled by logarithmic regression?
Which formula models logarithmic regression?
An app creator tracked the sales of his app for the first 14 days after it was released. Since the sales slowed over time, a logarithmic model can be used to model the data.
|Total Number of Sales since Launch||217||552||807||897||1,001||1,080||1,126||1,162||1,218||1,275||1,290||1,335||1,367||1,393|
Use a calculator to calculate the regression equation . Round the values of and to 1 decimal place.
Predict the total number of sales after 4 weeks.
Sophia suspects that the number of people, , who have heard a rumour is an exponential function of the time since the rumour started. If she is correct, which of the following would give a straight line graph when plotted?
- A against
- B against
- C against
- D against
- E against