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The owner of a chain of supermarkets notices that there was a positive correlation between the...

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Statistics

The owner of a chain of supermarkets notices that there was apositive correlation between the sales of beer and the sales of icecream over the course of the previous year. During seasons whensales of beer were above average, sales of ice cream also tended tobe above average. Likewise, during seasons when sales of beer werebelow average, sales of ice cream also tended to be below average.The owner is curious whether the observed association is due to acause-and-effect relation between eating ice cream and desiringbeer. To investigate this, the owner should use
A) The least-squares regression line.
B) The correlation coefficient.
C) The square of the correlation coefficient.
D) A well-designed experiment.
E) A 2-way table.
F) Extrapolation.
G) A residual plot.
H) A histogram.
I) A scatterplot.
J) A boxplot.

Answer & Explanation Solved by verified expert
3.7 Ratings (632 Votes)
There is standard way to see if there is any relation between to variablres by using scatter plot Its always helpfult to use this tecnique After that we may need to carry out correlation to see    See Answer
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