A2 U13 L1 types of studies

Compare voter satisfaction levels between people assigned to use either paper ballots or touchscreen machines.

• Experiment
• Observational Study

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.B.5

Determine if people who take vitamin C every day are less likely to get colds.

• Experiment
• Observational Study

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CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

CCSS.HSS.ID.C.9

Compare the grades on a final math test of 25 students who use calculators and 25 students who do not use calculators. The students decide which group they are in.

• Experiment
• Observational Study

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

Research in which the researcher separates participants into two or more groups, applies some sort of treatment, then compares the results

• Observational Study

• Treatment

• Control group

• Experimental study

A group in an experimental study that does not receive a treatment

• Control Group
• Variable of Interest
• Experimental study
• Population

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year
• to randomly choose some 7th grade students to select a location
• to ask all 7th grade teachers and administrators for a location
• to ask the student council to choose a location

You want to see if fifth-grade boys or fifth-grade girls are faster at solving Ken-Ken puzzles. You randomly select twenty fifth-grade boys and twenty fifth-grade girls from fifth graders in your school district. You time and record how long it takes each student to solve the same Ken-Ken puzzle correctly.

What type of study is described?

• Survey

• Experimental Study

• Observational Study

Tags

CCSS.HSS.IC.B.3

To research the effects of "dietary patterns" on blood pressure in 459 subjects, subjects were randomly assigned to two groups and had their meals prepared by dieticians. Those who were fed a diet low in fat and cholesterol and high in fruits, vegetables, and low-fat dairy foods (known as the DASH diet) lowered their systolic blood pressure by an average of 6.7 points when compared with subjects fed a control diet.

• Observational Study

• Experiment

When one examines the entire population instead of a subgroup of the population, this is called a ____________.

• Sampling
• Census
• Bias

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

The May 4, 2000, issue of Science News reported that, contrary to popular belief, depressed individuals cry no more often in response to sad situations than nondepressed people. Researchers studied 23 men and 48 women with major depression, and 9 men and 24 women with no depression. They showed the subjects a sad film about a boy whose father has died, noting whether or not the subjects cried. Women cried more often than men, but there were no significant differences between the depressed and nondepressed groups. 

• Observational Study
• Experiment

Tags

CCSS.HSS.IC.B.3