# The authors of the paper Evaluating Existing Movement Hypotheses in Linear Systems Using Larval Stream Salamanders (Canadian

## Question:

a. Construct a scatterplot of the data. How would you describe the relationship between x and y?

b. Find the equation of the least-squares line describing the relationship between y = net directionality and x = mean water temperature.

c. What value of net directionality would you predict for a stream that had mean water temperature of 15 °C?

d. The authors state that €œwhen temperatures were warmer, more larvae were captured moving upstream, but when temperatures were cooler, more larvae were captured moving downstream.€ Do the scatterplot and least-squares line support this statement?

e. Approximately what mean temperature would result in a prediction of the same number of salamander larvae moving upstream and downstream?

## Step by Step Answer:

**Related Book For**

## Statistics The Exploration & Analysis Of Data

**ISBN:** 9780840058010

7th Edition

**Authors:** Roxy Peck, Jay L. Devore