HH/PSYC 2022 N - Statistical Methods II (Winter 2024-2025)
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In a scatterplot, an outlier is one that:
A behavioral researcher reports the results of an interaction in a two-way between-groups ANOVA as F(2, 44) = 2.81. What decision should be made based on the value of this test statistic?
A researcher studying the relationship between the number of hours students spend studying and their score on an exam calculates the following regression equation: Y' = 4.07 + 0.21(X). In this example, 0.21 refers to _____.
In the equation: Y' = 12.6 X + 5
The “best fit line” is the regression line that:
A researcher administers two different drugs (X and Y) at two different times of day (morning or evening). The researcher states that the effect that Drug X has on behaviour depends on the time of day that it is administered. You can conclude:
Use the following ANOVA summary table to answer the following question:
Source | df | SS | MS | F | p |
Gender | 1 | 240.25 | 240.25 | 29.94 | 0.000 |
Group | 4 | 1514.94 | 378.73 | 47.19 | 0.000 |
Gender x Group | 4 | 190.30 | 47.58 | 5.93 | 0.002 |
Residual | 90 | 722.30 | 8.03 |
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Total | 99 | 2667.79 |
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The summary table suggests which of the following conclusions?
Which of the following is (are) true?
The Morris water maze is used to examine spatial learning in animals. Mice, who are good swimmers, are placed in a large pool of water and must learn to find a clear platform located just under the water surface. The platform is their only escape from the pool. If they do not find the platform, they have to continue swimming until we take them out. For one of the trials, the platform was removed from the pool and the amount of time the mouse spent in each of the four quadrants of the tank was recorded. What statistical test should be conducted on these data?
A researcher hypothesizes a relationship between anxiety levels and one’s level of fear. If she reports “F(2, 24) = 1.24, p >0.05”, her research hypothesis has ______ because the null hypothesis was _____.
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