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For the data shown in the scatter plot, which is the best estimate of r?

For The Data Shown In The Scatter Plot Which Is The Best Estimate Of R class=

Sagot :

Solution:

From the scatter plot, the following coordinates can be derived for the points;

The scatter plot with the points is as shown below on a graph plotter;

From the sketch and plot, the correlation coefficient of the plot with the line parameters is as shown;

From the above,

[tex]r=-0.9871[/tex]

The scatter plot shows a strong association where r is close to -1.

The following relation occurs for a scatter plot;

The plot shows a strong association with r close to -1.

Hence, from the plot made and the scatter plot given, it shows the correlation coefficient is close to minus 1.

Hence, the best estimate from the options is;

[tex]r=-0.94[/tex]

View image PerrisP657773
View image PerrisP657773
View image PerrisP657773
View image PerrisP657773