Question: Which of the following data sets or plots could have a regression line with a negative y-intercept? Select all that apply.
Question: Which of the following data sets or plots could have a regression line with a negative slope? Select all that apply.
Question: The scatter plot below shows data for the cost of a diamond necklace from a department store (y, in dollars) in the year x years since 2000. The least squares regression line is given by yˆ=1823+314x….. A coordinate system has a horizontal x-axis labeled Year from 4 to 12 in increments of 2 and a vertical y-axis labeled Cost in dollars from 0 to 2000 in increments of 500. A series of 5 plotted points follow the trend of a line segment that rises from l…. Interpret the y-intercept of the least squares regression line.
Question: The scatter plot below shows data for the number of sea turtles (y) tagged by scientists in a given year, where x is the year. The least squares regression line is given by yˆ=917,234−444x….. Interpret the y-intercept of the least squares regression line.
Question: The scatter plot below shows data for the number of sea turtles (y) observed in the wild in a given year, where x is the year. The least squares regression line is given by yˆ=917,234−444x…… Interpret the slope of the least squares regression line.
Instituition / Term
Term
Fall 2020
Institution
MATH 225N Statistical Reasoning for the Health Sciences
