Examlex
Instruction 15-14
Recent studies have found that Australian children are more obese than in the past. The amount of time children spent watching television has received much of the blame. A survey of 100 ten-year-olds revealed the following with regards to weights and average number of hours a day spent watching television. You are interested in testing whether the average number of hours spent watching TV and weights are independent at 1% level of significance.
| TV Hours |
-Referring to Instruction 15-14,the degrees of freedom of the test statistic are
Dependent Variable
In research, it's the variable that is being tested and measured, expected to change as a result of manipulations to the independent variable.
Manipulated
Refers to the controlled alteration or handling of variables in experiments to determine cause-and-effect relationships.
Placebo Effect
The phenomenon that occurs in an experiment when a participant’s response to a treatment is due to his or her expectations about the treatment rather than to the treatment itself.
Sugar Pill
A placebo, often used in medical trials to test the efficacy of new drugs by comparing their effects to those of an inert pill.
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