question archive Scatterplot a) Make an XY scatter plot linked to the following data on this sheet
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Scatterplot a) Make an XY scatter plot linked to the following data on this sheet.
X Y
6.981 | 12.266 |
3.982 | 8.455 |
2.084 | 5.951 |
9.113 | 14.395 |
2.280 | 7.435 |
6.567 | 11.332 |
1.897 | 7.011 |
7.186 | 12.716 |
4.094 | 9.214 |
1.257 | 7.499 |
7.199 | 10.473 |
2.136 | 6.124 |
3.032 | 8.832 |
3.735 | 9.295 |
8.612 | 34.622 |
0.338 | 7.155 |
5.348 | 10.475 |
9.208 | 13.650 |
7.570 | 13.910 |
8.646 | 11.895 |
1.953 | 7.387 |
3.475 | 7.871 |
3.962 | 10.482 |
8.084 | 11.727 |
4.866 | 8.688 |
b) The scatterplot reveals an outlier. Copy the data to a new sheet or a new area on this sheet, and remove the outlier. You should now have 24 rows of data above. Make a new scatterplot from the revised data.
c) Right click on the points, Add Trendline, Display Equation on chart, Display R-Squared value on chart
d) Read the intercept directly from the chart equation label. The elevation of the line above the origin with 3 decimal places =
e) Read the slope directly from the chart equation label. The slope of the line with 3 decimal places =
f) So, when X increases by 1, the change in Y =
g) Read R2 directly from the chart equation label. The amount of the variation in Y explained by X in percent is =
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