Name: Date:
Pd:
3. In a follow-up study, a group of scientists collect data that was fit by a linear model with a
correlation coefficient of r=-0.94.
Which study suggests a stronger relationship between the number of bacteria colonies and the
concentration of antibiotic—the doctors' study or the scientists' study? Explain your reasoning.

Triangle xyz has vertices x(1,3), y(0,0)

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?

Kerion has a beaded necklace business. she can make 12 necklaces is 2 hours. how long will it take her to make 9 necklaces?