Scatterplots Test Prep AK

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  1. D. There is not pattern or trend to these dots.  There is no correlation.
  2. C. This question is a bit of a trick.  It's hard to have an outlier when there is not clear pattern, but there are two dots that are out of the crowd.  The dot of the movie that cost 425 million is out of the main group, BUT, it not only cost the most but made the most, so, if there were more very expensive movies, it might fit (also, it's not an option). The other strange datapoint is the movie that cost 225 million to make (one of the cheapest movies) but grossed 610 million (the highest grossing).  Compared to the other options that are in the middle of the pack (or don't exist, like the moie that cost 800 million to make), C is the best answer. 
  3. A. There were two movies made for about 300 million.  One grossed just under 200 million and the other grossed just over 300 million.
  4. A. This is definitely a positive correlation.  It's not super strong (there are not really enough datapoints for that) but A is the best answer here. 
  5. A. Find 2025 on the x-axis and find the datapoint that is on that line:\$260.
  6. C. Find 2700 on the x-axis and follow it up to the best fit line.  There is not datapoint there but you are not looking for an actual datapoint, you are looking for a predicted datapoint based on the best fit line: \$480.