1.Refer to the Dale article. What type of statistical test was used in Table 2 to determine whether children on restricted days versus non-restricted days had a different activity level after school?
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Correlation |
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Dependent t-test |
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Independent t-test |
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ANOVA |
2.If you wanted to determine whether male or female stats students scored better on exams, which statistical test would you use?
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Correlation |
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Dependent t-test |
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Independent t-test |
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ANOVA |
3.Because of its dependence on two extreme scores, the ______ is not typically a useful measure of variability.
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Variance |
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Standard deviation |
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Confidence interval |
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Range |
4.Refer to Dale article. The children on the active day had a higher activity level after school than on the restricted day. Was this difference statistically significant?
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Yes |
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No |
5.Refer to Montgomery article. If percent MVPA accounts for 4.8% of the variability in PAL, how much variation does age, sex, and BMI SD score (together) account for in PAL?
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11.4% |
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12.0% |
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14.8% |
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6.6% |
6.From the choices below, identify the strongest correlation coefficient.
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-0.93 |
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0.90 |
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0.87 |
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-0.05 |
7.Consider two separate groups of people who had their body fatness measured. The mean and standard deviation for groups 1 and 2 were 37.4% ± 4 % and 38.2% ± 7%, respectively. For group 1, the 4% means:
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The body fat measurement is 4% accurate. |
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68.26% of the % fat values fall between 35.4% and 39.4%. |
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The group’s % fat did not fall below 4%. |
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68.26% of the % fat values fall between 33.4% and 41.4%. |
8.Refer to Montgomery article. From the correlation analyses in Figure 1, how much variability does time spent sedentary account for in PAL?
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33% |
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11% |
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57% |
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22% |
9.Refer to Dale article. What was the rate of committing a type I error for the After School time period?
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1.2% |
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12.0% |
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5% |
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0% |
10.If you wanted to determine whether the class’s test grades improved from the midterm to the final exam for stats students, which statistical test would you use?
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Correlation |
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Dependent t-test |
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Independent t-test |
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ANOVA |
11.Researchers risk making a type II error when:
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They conclude that means are different |
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They conclude that means are the same |
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They have too many subjects in their study |
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They measure too many variables in their study |
12.Measures of central tendency include all of the following EXCEPT:
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Mean deviation |
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Median |
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Mean |
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Mode |
13.If you wanted to determine whether the number of hours spent in class online was related to exam grades for stats students, which statistical test would you use?
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Correlation |
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Dependent t-test |
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Independent t-test |
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ANOVA |
14.Refer to Montgomery article. In the multiple regression analyses, is sex significantly related to PAL?
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Yes |
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No |
15.Consider two separate groups of people who had their body fatness measured. The mean and standard deviation for groups 1 and 2 were 37.4% ± 4% and 38.2% ± 7%, respectively. If you wanted to determine whether the two groups differed significantly in their % fat, the appropriate statistical test is:
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ANOVA |
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Independent t-test |
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Dependent t-test |
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Correlation |
16.Consider two separate groups of people who had their body fatness measured. The mean and standard deviation for groups 1 and 2 were 37.4% ± 4 % and 38.2% ± 7%, respectively. The spread of scores is:
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Greater in group 1 |
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Greater in group 2 |
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The same in both groups |
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Too low |
17.Refer to Faigenbaum article. For the chest press results, which statement is correct?
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Chest press was significantly related to the number of days of training per week. |
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The change in strength in the control group was not different from the 1 day group. |
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The change in strength in the control group was not different from the 2 day group. |
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The change in strength in the 1 day group was greater than in the control group. |
18.Refer to Montgomery article. Is how heavy a child is (as measured by BMI SD score) significantly related to his or her level of physical activity (PAL) in this study?
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Yes |
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No |
19.Type I errors are made when, based on the results of a study, the researcher:
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Correctly concludes that the intervention was effective |
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Incorrectly concludes that the intervention was effective |
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Correctly concludes that the intervention was not effective |
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Incorrectly concludes that the intervention was not effective |
20.Refer to Montgomery article. Which variable is inversely related to PAL?
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Time spent sedentary |
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Time spent in moderate activity |
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Age |
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None are inversely related |
http://www.medscape.com/viewarticle/551807
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