Statistical Analysis for Education and Psychology Researchers

Obs ID Dep Var
SMATHS

Predict

Value

Std Err

Predict

Lower

Mean

95% Upper

95% Mean

Lower

95%

Predict

1 17 110.0 113 1.638 109.4 117.0 101.0

2 18 133.0 131.7 3.264 124.2 139.2 117.9

3 19 109.0 113.2 1.638 109.4 117.0 101.0

4 20 114.0 105.8 2.317 100.4 111.1 92.9984

5 24 128.0 124.3 2.225 119.2 129.4 111.6

6 27 109.0 113.2 1.638 109.4 117.0 101.0

7 28 119.0 124.3 2.225 119.2 129.4 111.6

8 29 119.0 113.2 1.638 109.4 117.0 101.0

9 60 95.0000 98.3709 3.377 90.5826 106,2 84.3941

10 61 110.0 116.9 1.612 113.2 120.6 104.7

Obs 10 95%

Predict

Residual Err

Residual

Student

Residual

–2–1–0 1 2

1 17 125.4 −3.1788 4.759 −0.668 | |
2 18 145.5 1.3113 3.831 0.342 | | |
3 19 125.4 −4.1788 4.759 −0.878 | | |
4 20 118.6 8.2252 468 1.841 | * |
5 24 137.0 3.7152 .515 0.823 | |
6 27 125.4 −4.1788 4.759 −0.878 |
7 28 137.0 −5.2848 4.515 −1.171 | | |
8 29 125.4 5.8212 4.759 1.223 | * |
9 60 112.3 −3.3709 3.731 −0.903 | |
10 61 129.1 1.1192 4.768 0.235 | | |
obs ID Cook’s D
1 17 0.026
2 18 0.043
3 19 0.046
4 20 0.456
5 24 0.082
6 27 0.046
7 28 0.166
8 29 0.89
9 60 0.334
10 61 0.003
Sum of
Residuals

0

Sum of Squared
Residuals

202.6358

Predicted
Resid SS
(Press)

316.6016

Figure 8.6: Regression output for data

shown in Table 8.2

Inferences involving continuous data 275