Please make sure to click this link to be able to answer these questions. Thank

Question

Please make sure to click this link to be able to answer these questions. Thank you.

http://www.nature.com/ijo/journal/v32/n7/full/ijo200879a.html

What were the independent (predictors) and dependent (outcomes) variables in the study? What were the operational definitions for each variable and how were they categorized? (If you are not provided with enough information to tell what the authors did. suggest an operational definition that could be used for the variables. If you have been given enough information describe what the authors' operational definitions were.) What were the levels of measurements for each variable? What statistical test was used for analysis? Why was this statistical test used?

Explanation / Answer

1. Time and socio economic status are the independent variable.

Height , weight , waistline, BMI are dependent variables.

2.

Promoting healthy eating

physical activity

healthy weight

3.

4. t- test is the statistical method used. When observing two samples with smaller number and if the variance is unknown t-test is used. Here the cause for obesity is not known and hence which factors play a role in obesity is determined by this test. Hence used.

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