We'll return to the original view and stick with a single trend line as we consider the trend models available. The following models can be selected from the Trend Line Options window:
- Linear: We'd use this model if we assumed that, as Size increases, the Price will increase at a constant rate. No matter how much Size increased, we'd expect Price to increase such that new data points fell close to the straight line:
- Logarithmic: We'd use this model if we expect that there is a law of diminishing returns in effect. That is, size can only increase so much before buyers will stop paying much more:
- Exponential: We'd use this ...
