3 types of studies

A researcher is interested in learning how people use the neighborhood park. The researcher goes to the park daily for a month and records how many people are on the playground, how many are on the basketball court, how many are at the picnic tables, and how many are at the skate park. What type of study is this?

• Observational

• Experiment

• Survey

Tags

CCSS.HSS.IC.B.3

A researcher is interested in how caffeine affects sleep. He gets 100 randomly selected people spend the night in the lab. Before bed, he gives 50 people decaffeinated coffee and 50 people caffeinated coffee. He records the brain waves of each participant throughout the night. What kind of study is this?

• survey

• experiment

• observation

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

A researcher is interested in how people in his neighborhood feel about the 2nd amendment. He goes to a nearby mall, a movie theater, a grocery store, and a home improvement store and asks every 6th person he sees to answer 4 short questions. What kind of study is this?

• experiment

• observation

• survey

Tags

CCSS.HSS.IC.B.3

A study was done to answer the question, “What is the effect of different duration of light and dark on the growth of radish seedlings?” Three similar growth chambers (plastic bags) were created in which 30 seeds randomly chosen from a package were placed in each chamber. One chamber was randomly selected and placed in 24 hours of light, another for 12 hours of light and 12 hours of darkness, and a third for 24 hours of darkness. After three days, researchers measured and recorded the lengths of radish seedlings for the germinating seeds.

What type of study is this?

• Experiment

• Sample survey

• Observational study

Tags

CCSS.HSS.IC.B.3

A study of 1500 people was conducted where subjects were randomly assigned test a new energy drink. People were asked to try the new energy drink or continue to drink their usual caffeinated beverage. They then looked at the energy levels of the participants to see if the new energy drink really did help the subjects to have more energy.

What type of study is this?

• Experiment

• Sample survey

• Observational study

Tags

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.5

A study of 1500 people was conducted where subjects were randomly assigned test a new energy drink. People were asked to try the new energy drink or continue to drink their usual caffeinated beverage. They then looked at the energy levels of the participants to see if the new energy drink really did help the subjects to have more energy. This study found that the new energy drink increased the energy level of the participants in the study.

Whom can they claim the findings apply to?

• Only the people in the population of the study

• Anyone at the store buying energy drinks

• Only to the 1500 participants of this study

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

A group of biologist want to study the eating habits of giraffe's in the wild. They found a group of giraffes and monitor them for 6 months.

What type of study is this?

• Experiment

• Sample survey

• Observational study

Tags

CCSS.HSS.IC.B.3

A study took random sample of 400 adults and asked them some questions about their bedtime habits. The data showed that people who drank a cup of tea before bedtime were more likely to go to sleep earlier than those who didn't drink tea.

What type of study is this?

• Experiment

• Sample Survey/Poll

• Observational study

Tags

CCSS.HSS.IC.B.3

A study took a group of 400 randomly selected adults and divided them into two groups at random. One group was told to drink tea every night for a week, while the other group was told not to drink tea that week. Researchers then compared when each group fell asleep.

Who can the results of this study be generalized to?

• Only the 400 adults in the study

• To everyone in the population

• to anyone who drinks tea

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

A study took a sample of 40 people and examined their social media habits. Each person was classified as either a light, moderate, or heavy social media user. The researchers looked at which people tended to be happier.

Who can the results of this study be generalized to?

• Only the 40 adults in the study

• To everyone in the population

• Even to people beyond the population

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.4