Matching Here are several scatterplots. The calculated correlations are -0.923, -0.487, 0.006, and 0.777.Which is which?<img src="13310101121.JPG">

Unusual points Each of the four scatterplots that follow shows a cluster of points and one “stray” point. For each, answer these questions:
1) In what way is the point unusual? Does it have high leverage, a large residual, or both?
2) Do you think that point is an influential point?
3) If that point were removed, would the correlation be- come stronger or weaker? Explain.
4) If that point were removed, would the slope of the re- gression line increase or decrease? Explain

A group of students were polled to find out how many were planning to major in a scientific field of study in college. The results of the poll are shown in the two-way table. Which of the following statements is true? A. Three hundred sixty students were polled in all. B. A student in the senior class is more likely to be planning on a scientific major than a nonscientific major. C. A student planning on a scientific major is more likely to be a junior than a senior. D. More seniors than juniors plan to enter a scientific field of study. $\$\$\begin{array}{cccccccccc}\text{Majoring in a science field}& & \text{Yes}& \text{No}\text{Class}& \text{Junior}& \text{150}& \text{210}& \text{Senior}& \text{112}& \text{200}\end{array}\$\$$