1. I reduce my calories by 250 per day and then see how much weight I lose. In this scenario, the weight loss is the

A.Independent or Explanatory variable B.Response or dependent variable C. A lurking variable. D. Confounded

2. I randomly select the amount of time that students spend studying for the exam, such as 90 minutes and 15.1387806886 seconds, 122 minutes and 58.8543334 seconds, etc. This is an example of a

Sample average. Infinite sample space. Discrete variable. Event

3. Every 10 years America completes a census (which counts everybody) so that we can have information about the Populaltion Sample Placebo effect Voluntary response sample

4. If every individual in a population has the same chance of being included in a sample, the sample is a(an) .

Stratified Sample Random Sample Biased Sample Convenience Sample

5. 100 people signed up for the experiment. We number them all from 1 to 100. We use a computer to generate four sets of numbers in order to assignment people to take 25mg, 50mg, 75mg or get the placebo. This is an example of

Placebo Random sampling Competely randomized design Matched pairs design