Reference no: EM13543974
1. For the following data set, calculate the oneway ANOVA and test for significance at the .05 level.
Group 1 Group 2 Group 3 Group 4
x x2 x x2 x x2 x x2
7 49 10 100 12 144 16 256
8 64 12 144 14 196 15 225
7 49 13 169 13 169 18 324
9 81 13 169 11 121 17 289
9 81 14 196 13 169 20 400
11 121 15 225 15 225 21 441
10 100 14 196 13 169 22 484
61 545 91 1,199 91 1,193 129 2,419
2. Calculate the X2 for the following 3 X 2 table and test for significance at the .01 level.
Group 1 Group 2 Group 3
Positive
Outcome 9 12 8 29
Negative
Outcome 5 16 4 25
14 28 12 54
3. For the following group data, calculate a t-test and test for significance at the .05 level, 2-tailed level of significance.
Treatment Group Control Group
Mean = 68.4 Mean = 52.2
sd = 5.6 sd = 6.0
n = 42 n = 46
4. For the following paired observations, calculate the Pearson product-moment correlation coefficient and test for significance at the .01 level.
x x2 y y2 xy
17 289 23 529 391
17 289 19 361 323
18 324 20 400 360
19 361 17 289 323
21 441 15 225 315
22 484 19 361 418
21 441 20 400 420
23 529 19 361 437
22 484 20 400 440
18 324 16 256 288
198 3,966 188 3,582 3,715
5. For the following data regarding paired rank orders for a sample, calculate the correlation coefficient and test for significance at the .05 level.
Subject # Rank 1 Rank 2
1 2 1
2 1 2.5
3 3 2.5
4 5 4
5 6 5
6 4 8
7 7 6
8 9 7
9 8 10
10 10 9
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