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To calculate the correlation factor (r), go to Excel, Formulas, Statistics, and select the CORREL function. To calculate the Regression Equation and

September 22, 2024

To calculate the correlation factor (r), go to Excel, Formulas, Statistics, and select the CORREL function.
To calculate the Regression Equation and Coefficient of Determination:

a. Select the x,y data

b. Insert a scatter chart from that data

c. Click the chart, go to Chart Design

d. Go to Quick Layout

e. Select Layout 9

f. Then you get the Regression Equation, and r square.

Using MS Excel, prepare a Simple Linear Regression for the following data:
In the data that follows, X=median diameter (in millimeters) of granules of sand, and Y=gradient of beach slope in degrees on natural ocean beaches.

X
0.17
0.19
0.22
0.235
0.235
0.30
0.35
0.42
0.85

0.63
0.70
0.82
0.88
1.15
1.50
4.40
7.30
11.30

Then using MS Excel:

1) Find the sample mean and standard deviation for x and y.
2) Calculate the Coefficient of Correlation (r).
3) Make a scatter plot.
4) If there is correlation, then find the equation of the least-square line or regression line, and then graph the line on the scatter plot.
5) Find the coefficient of determination r**2 (r square).

>Mathematics homework help

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