1 Description: A scatter plot entitled "# of Spa Treatments vs. # of Guests" The x-axis is labeled "# of guests" and the y-axis is labeled "# of spa treatments." The range of values along the x-axis is 0 to 600 in intervals of 100. The range of values along the y-axis is 0 to 35 in intervals of 5. The plot points generally slope upward from left to right, starting at approximately (250, 17) and ending at approximately (525, 33). # of Spa treatments vs. # of guests (all values approximate) # of guests # of spa treatments 250 17 255 15 300 18 340 20 400 20 480 25 500 25 500 30 510 28 520 33 What is the approximate correlation coefficient between these two variables? 1.00 0.90 0.20 -0.90