1.   What type of relationship or pattern does the scatter plot suggest?
   
    A. no pattern B. a linear relationship whose data have a negative relationship
    C. a linear relationship whose data have a positive relationship D. none of these
    Hint

  2.   Which is the best prediction equation for the data?
   
    A. y = 10x - 19,950 B. y = 5x - 19,950
    C. y = 25x - 19,950 D. y = 20x - 19,950
    Hint

  3.   The math scores, x, and chemistry scores, y, for six students are given in the table. Use a graphing calculator to find the Pearson product-moment correlation.
   
    A. about 0.68 B. about 0.71
    C. about 0.74 D. about 0.65
    Hint

  4.   Use two ordered pairs to write the equation of a best-fit line.
   
    A. y = 5x + 75 B. y = 3x + 72
    C. y = 5x D. y = 3x
    Hint

  5.   Determine two points that appear to represent the data in the scatter plot. Then find and interpret the slope.
   
    A. Paul's test scores improve an average of 5 points with each test.
    B. Paul's test scores improve an average of 3 points with each test.
    C. Paul's test scores are neither increasing nor decreasing.
    D. Paul's test scores improve an average of 15 points with each test.
    Hint