1 A university looks at the admission acceptance rates for i

1. A university looks at the admission acceptance rates for its graduate schools in business and in law. For the business school, the percentage of female applicants that get admitted is higher than the percentage of male applicants that get admitted. For the law school, the percentage of female applicants that get admitted is higher than the percentage of male applicants that get admitted. But when combining the two schools, the percentage of male students that get admitted is higher overall than the percentage of female students that get admitted. This finding is possible because of

Simpson\'s paradox

the placebo effect

blocking

double blinding

2. A school administrator wants to get a sample of students to find out about students\' opinions of the school mascot. She wants to make sure she has an even age distribution in her sample, so she randomly selects two students from each grade in the school (kindergarten through 12th grade), which gives her a sample of 26 kids. This is an example of a

systematic sample.

stratified sample.

multistage sample.

simple random sample.

3. A study is done with migraine sufferers to see if a new medication will help. Some people are given the new medication, in pill form, and some people get nothing. The people in the \"pill group\" averaged much higher pain relief than the people in the \"no-pill group\". Unfortunately, we cannot conclude that the new medication \"works\". Rather than being due to the medication, the pain relief in this example could be the result of

a multistage sample.

Simpson\'s paradox.

voluntary response.

the placebo effect.

Solution

1. A university looks at the admission acceptance rates for its graduate schools in business and in law. For the business school, the percentage of female applicants that get admitted is higher than the percentage of male applicants that get admitted. For the law school, the percentage of female applicants that get admitted is higher than the percentage of male applicants that get admitted. But when combining the two schools, the percentage of male students that get admitted is higher overall than the percentage of female students that get admitted. This finding is possible because of

Simpson\'s paradox-------ANSWER

2. A school administrator wants to get a sample of students to find out about students\' opinions of the school mascot. She wants to make sure she has an even age distribution in her sample, so she randomly selects two students from each grade in the school (kindergarten through 12th grade), which gives her a sample of 26 kids. This is an example of a

.

stratified sample----------ANSWER.

.

3. A study is done with migraine sufferers to see if a new medication will help. Some people are given the new medication, in pill form, and some people get nothing. The people in the \"pill group\" averaged much higher pain relief than the people in the \"no-pill group\". Unfortunately, we cannot conclude that the new medication \"works\". Rather than being due to the medication, the pain relief in this example could be the result of

the placebo effect.-------ANSWER