It Was During the ________ Period Within the ________ Era

question 56

Multiple Choice

It was during the ________ period within the ________ era that chordates made their first appearance.

• A)Cambrian,Paleozoic
• B)Ordovician,Paleozoic
• C)Mesozoic,Cretaceous
• D)Paleozoic,Cambrian

---

Definitions:

Least Squares Regression

A method for estimating the best-fitting line through a set of points by minimizing the sum of the squares of the vertical deviations from each point to the line.

Simple Linear Regression

A numerical approach that establishes the link between a dependent variable and one independent variable through the application of a linear equation to the data observed.

Residual Plot

A graphical representation used to visualize the difference between observed and predicted values in a regression analysis.

Normal Probability Plot

A graphical technique for assessing whether or not a data set is approximately normally distributed.