The data in the table is the number of absences for 7 students and their corresponding grade. Number of Absences 1 3 4 4 5 6 6 Grade 4 3.6 2.8 2.7 2.6 2.4 1.5 Table Step 3 of 5 : Calculate the estimated variance of slope, s2b1. Round your answer to three decimal places.
SOLUTION:
Given That,
find the table by using data ,
y_i | ||
4 | 4.45574 - 0.4242*1=4.03154 | 0.0009947716 |
3.6 | 4.45574 - 0.4242*3=3.18314 | 0.1737723 |
2.8 | 4.45574 - 0.4242*4=2.75894 | 0.001685924 |
2.7 | 4.45574 - 0.4242*4=2.75894 | 0.003473924 |
2.6 | 4.45574 - 0.4242*5=2.33474 | 0.07036287 |
2.4 | 4.45574 - 0.4242*6=1.91054 | 0.2395711 |
1.5 | 4.45574 - 0.4242*6=1.91054 | 0.1685431 |
Variance of Slope =
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