In 17-28, find the intercepts and graph each equation by plotting points. Be sure to label the intercepts. y = x2 - 9

Frequency + Histograms Saturday, August 8,1:00 PM Audio recording started: 2:14 PM Thursday, August 20, 2015 Statistics: Collecting data Analysis Presentation Interpretation Data: Qualitative (numeric descriptions such as the numbers basketball players wear, non numeric) Quantitative (numeric, how much or how many) Frequency distribution: Mathematics Achievement Test scores for a sample of 50 6th graders. [A list of like 50 numbers was on the board] Example: Class width = (max - min)/(number of classes) The number of classes has to be given. The Class width in this example turned out to be 9.5 rounded to 10. Class width = 10 Score Frequency Relative Frequency 40-49 IIIII 5 0.10 50-59 IIIIIIIIII 10 0.20 60-69