12 terms

A division I men's basketball coach is tracking player eligibility. He records each player's credits

earned, the number of class absences each player has, and each player's GPA

earned, the number of class absences each player has, and each player's GPA

Credits earned, quantitative, credits; number of class absences, quantitative, days; GPA,

quantitative, scale from 0 to 4

quantitative, scale from 0 to 4

A person's height in feet

Quantitative

The color of your house

Categorical

A magazine publisher mails a survey to every subscriber asking about the timeliness of its subscription service. The publisher finds that only 5% of the subscribers responded. This 5%

represents what?

represents what?

The sample

A computer network manager wants to test the reliability of some new and expensive fiber-optic

Ethernet cables that the computer department just received. The computer department received 9

boxes containing 30 cables each. The manager does not have the time to test every cable in each

box. The manager will choose one box at random and test 6 cables chosen randomly within that

box. What is the sampling frame?

Ethernet cables that the computer department just received. The computer department received 9

boxes containing 30 cables each. The manager does not have the time to test every cable in each

box. The manager will choose one box at random and test 6 cables chosen randomly within that

box. What is the sampling frame?

The one box that was chosen at random from the 9 boxes

At the local college a survey was being done on whether or not the students liked the cafeteria food.

The survey was located in the college newspaper and was to be filled out and sent to the editing

office. Identify the type of sampling used in this example

The survey was located in the college newspaper and was to be filled out and sent to the editing

office. Identify the type of sampling used in this example

Voluntary response sampling

A newspaper reporter randomly sampled households by telephone during various times of the

day. The people sampled are within the area of the newspaper's distribution. The newspaper

reporter asked, "Are you patriotic in a time of war or armed conflict?" What, if any, will be the

most noticeable bias for this survey?

day. The people sampled are within the area of the newspaper's distribution. The newspaper

reporter asked, "Are you patriotic in a time of war or armed conflict?" What, if any, will be the

most noticeable bias for this survey?

Response bias

780 patients suffering from high blood pressure were randomly assigned to one of three groups.

Over a four-month period, the first group received an experimental drug, the second group

received a placebo, and the third group received no treatment. The diastolic blood pressure of each

participant was measured at the beginning and at the end of the period and the change in blood

pressure was recorded. The biggest decrease in blood pressure was for those who received the

drug

Over a four-month period, the first group received an experimental drug, the second group

received a placebo, and the third group received no treatment. The diastolic blood pressure of each

participant was measured at the beginning and at the end of the period and the change in blood

pressure was recorded. The biggest decrease in blood pressure was for those who received the

drug

Experiment

In a group of 500 women, those who smoked moderately did worse on tests of reaction time than

those who did not smoke. Identify the subjects studied.

those who did not smoke. Identify the subjects studied.

Women who smoke moderately and women who do not smoke

An education researcher was interested in examining the effect of the teaching method and the

teacher on the reading level of students with learning disabilities. 257 students with learning

disabilities participated in an experiment. There are four different teachers (Juliana, Felix, Sonia,

and Helen) and three different teaching methods (A, B, and C). Students are randomly assigned to a

teaching method and a teacher. Those who studied with Sonia using method B achieved the highest

scores on a reading test. Identify the subjects studied

teacher on the reading level of students with learning disabilities. 257 students with learning

disabilities participated in an experiment. There are four different teachers (Juliana, Felix, Sonia,

and Helen) and three different teaching methods (A, B, and C). Students are randomly assigned to a

teaching method and a teacher. Those who studied with Sonia using method B achieved the highest

scores on a reading test. Identify the subjects studied

Students with learning disabilities

An education researcher was interested in examining the effect of the teaching method and the

teacher on students' reading levels. 257 students participated in an experiment. There were two

different teachers (Juliana and Felix) and three different teaching methods (A, B, and C). Students

were randomly assigned to a teaching method and teacher. At the end of the semester the students

took a reading test on which they received a score out of 20. Students who studied wth Felix using

method B achieved the highest scores. Identify the factor(s) in the experiment and the number of

levels for each.

teacher on students' reading levels. 257 students participated in an experiment. There were two

different teachers (Juliana and Felix) and three different teaching methods (A, B, and C). Students

were randomly assigned to a teaching method and teacher. At the end of the semester the students

took a reading test on which they received a score out of 20. Students who studied wth Felix using

method B achieved the highest scores. Identify the factor(s) in the experiment and the number of

levels for each.

B) Teaching method (3 levels) and teacher (2 levels)

An education researcher was interested in examining the effect of the teaching method and the

teacher on students' reading levels. 257 students participated in an experiment. There were two

different teachers (Juliana and Felix) and three different teaching methods (A, B, and C). Students

were randomly assigned to a teaching method and teacher. At the end of the semester the students

took a reading test on which they received a score out of 20. Students who studied wth Felix using

method B achieved the highest scores. The person evaluating the results does not know which

teacher or teaching method the students were assigned to.

teacher on students' reading levels. 257 students participated in an experiment. There were two

different teachers (Juliana and Felix) and three different teaching methods (A, B, and C). Students

were randomly assigned to a teaching method and teacher. At the end of the semester the students

took a reading test on which they received a score out of 20. Students who studied wth Felix using

method B achieved the highest scores. The person evaluating the results does not know which

teacher or teaching method the students were assigned to.

Single blind