Maths-
General
Easy
Question
Use the following scatter plot to answer each question. The scatter plot shows the monthly income of each person in hundreds of dollars versus the percent of their income that they save each month.
a) Does this scatter plot represent a positive association, negative association, or non association? Why?
b) Which person makes the most money per month? How much do they make?
c) Which person is the outlier in this data set? Why?
Hint:
Trend line is the line that approximates the pattern of the data set. An outlier is the set of points that stay quite far away from the trend line.
We are asked to find the association of the graph, who makes the most money and the outlier in the set.
The correct answer is: We are asked to find the association of the graph, who makes the most money and the outlier in the set.
ANSWER:
Step 1 of 3:
The trend line of the graph is:
It is clear that the trend line is upward, which shows a positive slope. Hence, the association is positive.
Step 2 of 3:
Analyzing the graph, Paul makes the most money in a month. He makes about 2800 dollars.
Step 3 of 3:
Kory is the outlier in the graph. Kory is the outlier because he stays quite far away from the trend line showing an abnormal behavior.
It is clear that the trend line is upward, which shows a positive slope. Hence, the association is positive.
Step 2 of 3:
Analyzing the graph, Paul makes the most money in a month. He makes about 2800 dollars.
Step 3 of 3:
Kory is the outlier in the graph. Kory is the outlier because he stays quite far away from the trend line showing an abnormal behavior.
In case of positive association, both the variables increase and decrease together. This means that the graph has a positive slope.
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