Construct a scatter plot using excel for the given data. Determine whether there is a positive linea
Question: Construct a scatter plot using excel for the given data. Determine whether there is a positive linear correlation, negative linear correlation, or no linear correlation. Complete the table and find the correlation coefficient r.
The data for x and y is shown below.
x | -5 | -3 | 4 | 1 | -1 | -2 | 0 | 2 | 3 | -4 |
y | 11 | -6 | 8 | -3 | -2 | 1 | 5 | -5 | 6 | 7 |
a) Scatter plot (3 points)
b) Type of correlation (positive linear correlation, negative linear correlation, or no linear correlation) (2 points)
c) Complete the table and find the correlation coefficient r rounded to 4 decimals.
(5 points)
x | y | xy | x2 | y2 |
-5 | 11 | |||
-3 | -6 | |||
4 | 8 | |||
1 | -3 | |||
-1 | -2 | |||
-2 | 1 | |||
0 | 5 | |||
2 | -5 | |||
3 | 6 | |||
-4 | 7 | |||
Use the last row of the table to show the column totals.
n = 10
\[r=\frac{n\sum{xy-\left( \sum{x} \right)\left( \sum{y} \right)}}{\sqrt{n\sum{{{x}^{2}}-{{\left( \sum{x} \right)}^{2}}}}\sqrt{n\sum{{{y}^{2}}-{{\left( \sum{y} \right)}^{2}}}}}\] =
Deliverables: Word Document
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