1.Refer to the Dale article. What type of statistical test w

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?  Correlation  Dependent t-test  Independent t-test  ANOVA2.If you wanted to determine whether male or female stats students scored better on exams, which statistical test would you use?  Correlation  Dependent t-test  Independent t-test  ANOVA3.Because of its dependence on two extreme scores, the ______ is not typically a useful measure of variability.  Variance  Standard deviation  Confidence interval  Range4.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?  Yes  No5.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?  11.4%  12.0%  14.8%  6.6%6.From the choices below, identify the strongest correlation coefficient.  -0.93  0.90  0.87  -0.057.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:  The body fat measurement is 4% accurate.  68.26% of the % fat values fall between 35.4% and 39.4%.  The group’s % fat did not fall below 4%.  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?  33%  11%  57%  22%9.Refer to Dale article. What was the rate of committing a type I error for the After School time period?  1.2%  12.0%  5%  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?  Correlation  Dependent t-test  Independent t-test  ANOVA11.Researchers risk making a type II error when:  They conclude that means are different  They conclude that means are the same  They have too many subjects in their study  They measure too many variables in their study12.Measures of central tendency include all of the following EXCEPT:  Mean deviation  Median  Mean  Mode13.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?  Correlation  Dependent t-test  Independent t-test  ANOVA14.Refer to Montgomery article. In the multiple regression analyses, is sex significantly related to PAL?  Yes  No15.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:  ANOVA  Independent t-test  Dependent t-test  Correlation16.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:  Greater in group 1  Greater in group 2  The same in both groups  Too low17.Refer to Faigenbaum article. For the chest press results, which statement is correct?  Chest press was significantly related to the number of days of training per week.  The change in strength in the control group was not different from the 1 day group.  The change in strength in the control group was not different from the 2 day group.  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?  Yes  No19.Type I errors are made when, based on the results of a study, the researcher:  Correctly concludes that the intervention was effective  Incorrectly concludes that the intervention was effective  Correctly concludes that the intervention was not effective  Incorrectly concludes that the intervention was not effective20.Refer to Montgomery article. Which variable is inversely related to PAL?  Time spent sedentary  Time spent in moderate activity  Age  None are inversely relatedhttp://www.medscape.com/viewarticle/551807may have to set up a free account to get in


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