Classify each method as a survey, an experiment or observational study, and explain which would be the most reliable. Which method is the most reliable and why?

Method A is the most reliable because it is a controlled experiment with random assignment, reducing bias and allowing for a direct comparison of the effects of the ointments.

Method B is the most reliable because it uses a survey to collect opinions from a large group of people, ensuring a wide range of responses.

Method C is the most reliable because it is an observational study, which avoids interfering with the subjects and provides natural results.

All methods are equally reliable because they each use different approaches to collect data.

A lamp manufacturer has two lines of fabrication, line 1 and line 2, and the work is organized in two eight-hour shifts. The quality manager plans to introduce new quality checks using new power measurement devices. They decide to measure the power of the lamps exiting line 1 between 10:00 and 10:15 am every day for one week. Is their sample biased? Why or why not?

Yes, because the sample only includes lamps from line 1 and a specific time period, not representing all production.

No, because measuring every day for a week is sufficient to avoid bias.

No, because both lines are similar and the time chosen does not matter.

Yes, because the sample size is too large.

Her sample is biased. Why or why not?

Yes, because it does not represent the entire population.

No, because it includes everyone.

No, because it is randomly selected.

A doctor wants to find out about some possible side effects of a common drug they have prescribed. Which of these samples is unbiased?

generating a list of patients to interview by phone randomly from the patient registry

sending a survey to a select group of their patients

interviewing all the patients who come for an appointment on a Saturday

interviewing patients who come for an appointment during the week at random

interviewing patients who suffer from side effects of the drug

A student wants to research the number of students in his middle school who ride the school bus. Which of the following is the best method to obtain an unbiased sample?

Asking a random sample of 100 students during lunchtime if they ride the school bus

Asking all of the students in the library on Thursday if they ride the school bus

Asking a random sample of 50 students from his grade if they ride the school bus

Asking all of the students in the gymnastics team if they ride the school bus

Asking a random sample of 5 students in the hallway if they ride the school bus

A restaurant owner wants to conduct a survey about whether the residents of a town prefer his restaurant over others or not. His plan is to ask a random sample of his restaurant customers to fill in a questionnaire. Which of the following would most likely be the reason the sample is biased?

The restaurant customers are likely to prefer his restaurant.

The restaurant customers will not want to spend time filling in the questionnaire.

The number of customers in the chosen sample is not large enough.

We do not know how he will ensure that the sample is random.

The government wants to conduct a survey about the number of people in a town who think that a park needs to be remodeled. Their plan is to ask a random sample of the park’s visitors to fill in a questionnaire. Which of the following would most likely be the reason the sample is biased?

The park visitors would be more interested in remodeling the park.

The number of visitors in the chosen sample is not large enough.

We do not know how they will ensure that the sample is random.

There might be a high proportion of children in the sample, which will skew the result.

The visitors will not want to spend time filling in the questionnaire.

Key characteristics of and differences between experiments include:

Manipulation of variables and control groups distinguish experiments from other methods.

Experiments do not involve any control over variables.

Experiments are only used in natural settings without manipulation.

Experiments focus solely on observation without intervention.

Key characteristics and differences of Observation Studies include:

They involve observing subjects without intervention.

They always require random assignment to groups.

They manipulate variables to determine effects.

They are the same as experimental studies.

Identify a key characteristic of surveys.

They collect data from a large group of people using questionnaires.

They involve in-depth observation of a single subject.

They require laboratory experiments to gather data.

They focus on historical document analysis.

Define the following term and explain its importance when collecting data: Ethics.

Ethics refers to the moral principles guiding research, ensuring the protection of participants' rights and well-being.

Ethics is the process of collecting numerical data for statistical analysis.

Ethics refers to the technical skills required to operate research equipment.

Ethics is the method of organizing data into tables and charts.

Define the following term and explain its importance when collecting data: Feasibility.

Feasibility refers to the practicality of conducting a study, considering time, resources, and access to subjects.

Feasibility refers to the ethical considerations of a study, ensuring no harm comes to participants.

Feasibility refers to the statistical methods used to analyze collected data.

Feasibility refers to the theoretical framework guiding the research design.

Define the following term and explain its importance when collecting data: Privacy.

Privacy refers to protecting participants' personal information and ensuring confidentiality in data collection.

Privacy means sharing all collected data with the public.

Privacy is about making data collection mandatory for everyone.

Privacy refers to ignoring participants' consent during data collection.

Define the following term and explain its importance when collecting data: Bias.

Bias refers to systematic errors that can affect the validity of study results, often due to prejudiced data collection or analysis.

Bias is the process of randomly selecting participants to ensure fairness in a study.

Bias is a method used to increase the sample size in research.

Bias refers to the use of advanced statistical tools to analyze data.

Define the following term and explain its importance when collecting data: Randomization.

Randomization is the process of randomly assigning subjects to groups to reduce bias and ensure validity.

Randomization is the process of collecting data only from volunteers to ensure accuracy.

Randomization is the process of analyzing data using only one statistical method.

Randomization is the process of selecting the largest group for the experiment to increase sample size.

Define the following term and explain its importance when collecting data: Primary Data.

Primary data is data collected firsthand for a specific research purpose.

Primary data is data that is always collected from secondary sources.

Primary data refers to data that is always outdated and unreliable.

Primary data is data that is only used for historical analysis.

Define the following term and explain its importance when collecting data: Secondary Data.

Secondary data is data previously collected for another purpose but used for a new research question.

Secondary data is data collected firsthand by the researcher for the current study.

Secondary data refers to data that is always qualitative in nature.

Secondary data is information gathered only from experiments conducted by the researcher.

Define the following term and explain its importance when collecting data: Confounding Variable.

A confounding variable is an outside influence that affects the results of a study, making it difficult to determine the true relationship between variables.

A confounding variable is a variable that is always controlled in every experiment to ensure accuracy.

A confounding variable is the main variable being studied in an experiment.

A confounding variable is a variable that has no effect on the outcome of a study.

Research Methods and Data Collection Worksheet

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Research Methods and Data Collection Worksheet

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11th Grade

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Practice Problem

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Hard

Beatrice Thames

FREE Resource

The treatment: Being told to order in their normal way. The treatment group: The group told to order in their normal way. The control group: The group told to order with a pay service.

The treatment: Receiving a free meal. The treatment group: The group receiving a free meal. The control group: The group paying for their meal.

The treatment: Being observed while ordering. The treatment group: The group observed while ordering. The control group: The group not observed while ordering.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The study described in the report is a randomized comparative experiment. Describe the treatment, the treatment group, and the control group.

The treatment: Putting products on sale in early September. The treatment group: The group of products put on sale in early September. The control group: The group of products that did not go on sale until early November.

The treatment: Advertising products in early September. The treatment group: The group of products advertised in early September. The control group: The group of products advertised in early November.

The treatment: Increasing product prices in early September. The treatment group: The group of products with increased prices in early September. The control group: The group of products with increased prices in early November.

The treatment: Removing products from sale in early September. The treatment group: The group of products removed from sale in early September. The control group: The group of products removed from sale in early November.

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Research Methods and Data Collection Worksheet

50 questions

Circle the method of collecting data that would be most appropriate (cost effective) for the situation. A college wants to know if having a laptop will improve freshman study habits.

Circle the method of collecting data that would be most appropriate (cost effective) for the situation. A medical researcher wants to know the minimum dosage of a new medicine to recommend for headaches.

A grocery store manager wants to know how much more of a certain food item will sell if he lowers the price by 10%.

Circle the method of collecting data that would be most appropriate (cost effective) for the situation. A farmer wants to know how much water he must use to increase his crop yield by 20%.

Circle the method of collecting data that would be most appropriate (cost effective) for the situation.
A teacher wants to know how Internet access can help her students with their homework assignments.

The study described in the report is a randomized comparative experiment. Describe the treatment, the treatment group, and the control group.

The study described in the report is a randomized comparative experiment. Describe the treatment, the treatment group, and the control group.

The study described in the report is a randomized comparative experiment. Describe the treatment, the treatment group, and the control group.

Classify each method as a survey, an experiment or observational study, and explain which would be the most reliable. Method A: Randomly divide a group of 100 people with minor cuts into two groups. Have each group use a different ointment, and record how long it takes their cuts to heal.

Classify each method as a survey, an experiment or observational study, and explain which would be the most reliable. Method B: Choose 100 people at random. Ask which ointments they have used in the past, and how quickly their cuts have healed with each ointment.

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

Research Methods and Data Collection Worksheet

50 questions

Circle the method of collecting data that would be most appropriate (cost effective) for the situation. A college wants to know if having a laptop will improve freshman study habits.

Circle the method of collecting data that would be most appropriate (cost effective) for the situation. A medical researcher wants to know the minimum dosage of a new medicine to recommend for headaches.

A grocery store manager wants to know how much more of a certain food item will sell if he lowers the price by 10%.

Circle the method of collecting data that would be most appropriate (cost effective) for the situation. A farmer wants to know how much water he must use to increase his crop yield by 20%.

Circle the method of collecting data that would be most appropriate (cost effective) for the situation. A teacher wants to know how Internet access can help her students with their homework assignments.

The study described in the report is a randomized comparative experiment. Describe the treatment, the treatment group, and the control group.

The study described in the report is a randomized comparative experiment. Describe the treatment, the treatment group, and the control group.

The study described in the report is a randomized comparative experiment. Describe the treatment, the treatment group, and the control group.

Classify each method as a survey, an experiment or observational study, and explain which would be the most reliable. Method A: Randomly divide a group of 100 people with minor cuts into two groups. Have each group use a different ointment, and record how long it takes their cuts to heal.

Classify each method as a survey, an experiment or observational study, and explain which would be the most reliable. Method B: Choose 100 people at random. Ask which ointments they have used in the past, and how quickly their cuts have healed with each ointment.

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

Circle the method of collecting data that would be most appropriate (cost effective) for the situation.
A teacher wants to know how Internet access can help her students with their homework assignments.