An economist is studying the job market in Denver area neighborhoods. Let x represent the total number of jobs in a given neighborhood, and let y represent the number of entry-level jobs in the same neighborhood. A sample of six Denver neighborhoods gave the following information (units in hundreds of jobs).
x | 15 | 32 | 51 | 28 | 50 | 25 |
y | 3 | 3 | 7 | 5 | 9 | 3 |
Complete parts (a) through (e), given Σx = 201, Σy = 30, Σx^{2} = 7759, Σy^{2} = 182, Σxy = 1163, and r ≈ 0.872.
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Σx = | |
Σy = | |
Σx^{2} = | |
Σy^{2} = | |
Σxy = | |
r = |
x | = | |
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= | + x |
r^{2} = | |
explained | % |
unexplained | % |
Scatter Plot
It is a Graph between two variables. It is plotted to check the relationship between the two variables.
Steps to plot Scatter Plot on Excel
Calculation of correlation coefficient r
Finding The equation of least square line
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