2 small discussion question 1 case study question

Learning Goal: I’m working on a mathematics multi-part question and need an explanation and answer to help me learn.


Does the scatter plot appear linear? Strong or weak? Positive or negative?

This is a scatterplot with several points plotted in the first quadrant. The points form a clear pattern, moving upward to the right. The points do not line up , but the overall pattern can be modeled with a line.

Figure 12.26


Does the scatter plot appear linear? Strong or weak? Positive or negative?

This is a scatterplot with several points plotted in the first quadrant. The points move downward to the right. The overall pattern can be modeled with a line, but the points are widely scattered.

Figure 12.27


Does the scatter plot appear linear? Strong or weak? Positive or negative?

This is a scatter plot with several points plotted all over the first quadrant. There is no pattern.



For each of the following situations, state the independent variable and the dependent variable.

  1. A study is done to determine if elderly drivers are involved in more motor vehicle fatalities than other drivers. The number of fatalities per 100,000 drivers is compared to the age of drivers.
  1. A study is done to determine if the weekly grocery bill changes based on the number of family members.
  1. Insurance companies base life insurance premiums partially on the age of the applicant.
  1. Utility bills vary according to power consumption.
  1. A study is done to determine if a higher education reduces the crime rate in a population.


Table 12.22 gives the gold medal times for every other Summer Olympics for the women’s 100-meter freestyle (swimming).

Year Time (seconds)
1912 82.2
1924 72.4
1932 66.8
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