Understanding Studies - Day 5 (Alg2 Unit 8)

A chiropractor wants to test the effectiveness of a new muscle relaxant cream on his patients experiences muscle spasms. He separates the patients into two groups and administers the cream to only one of the groups. He then compares the results. Which type of study best describes the situation?

• Survey

• Observational Study

• Controlled Experiment

Tags

CCSS.HSS.IC.B.3

The Republican Party needs to collect data on the preferences of their party members regarding a new bill that is being brought before Congress. Which method of data collection is most appropriate?

• Survey

• Observational Study

• Controlled Experiment

Tags

CCSS.HSS.IC.B.3

A college dormitory has five common areas in the building. The college wants to convert one of the areas into a workout room. Dorm residents are polled to determine which commons area is used the least. Which type of study does this represent?

• Survey

• Observational Study

• Controlled Experiment

Tags

CCSS.HSS.IC.B.3

Which statement is not part of an observational study?

• The researcher decides who will participate in the sample group.

• The researcher gathers data from the sample, using surveys or measuring instruments.

• The researcher divides the sample group into two groups, with one group being a control group.

• The researcher analyzes the data obtained from the sample group.

Which survey is least likely to contain bias?

• Surveying a sample of people leaving a health food store to determine the number of times per week that a person eats only healthy foods.

• Surveying the member of a basketball team to determine the most watched TV sport.

• Surveying a sample of people leaving a supermarket to determine which color iPhone is most popular.

• Surveying a sample of people leaving a restaurant to determine the average number of times per week that a person eats out.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

In an attempt to avoid bias in observational studies and surveys,

• assign subjects to a control group.

• select subjects at random.

• analyze the data the same day.

• publish the results in a well known journal or magazine.

Tags

CCSS.HSS.IC.B.3

When viewing a statistical study, you should consider:

• whether the group collecting the data has an interest in the outcome of the study.

• whether the study is recent.

• whether the sample size of the study was sufficient to generalize the findings.

• whether the data used was the complete data or was a condensed form of the data.

• All of the above.

A home-improvement store tests the adhesive power of two new products designed to be used outdoors. Two mailboxes (A and B) of the same shape and size are adhered to the front of the store in the same location. One product was used on Mailbox A and the other product on Mailbox B. The store found that mailbox A was more secure. Which type of study describes this situation?

• Survey

• Observational Study

• Experiment

To determine a cause-and-effect relationship, where one event is the results of the other, which type of study is needed?

• Survey

• Observational Study

• Experiment

A study is devised to determine whether junior boys or junior girls are faster at correctly stating a tongue-twister. Students are selected at random from the same junior class and one tongue-twister saying is selected. The time to complete the twister correctly is recorded for each student. What type of study describes this situation?

• Survey

• Observational study

• Experiment

Tags

CCSS.HSS.IC.B.3