Unit 1 Flashcard 1 Practice flashcard

Front

What is an observational study?

Back

An observational study is a research method where the researcher observes subjects in their natural environment without manipulating any variables.

Front

What is the difference between mean and median?

Back

The mean is the average of a set of numbers, while the median is the middle value when the numbers are arranged in order. The median can be larger than the mean in skewed distributions.

Front

What is a biased sample?

Back

A biased sample is a sample that does not accurately represent the population from which it is drawn, leading to skewed results.

Front

What is a systematic random sample?

Back

A systematic random sample is a sampling method where every nth individual is selected from a list or queue.

Front

What is a random sample?

Back

A random sample is a subset of individuals chosen from a larger set, where each individual has an equal chance of being selected.

Front

What is an experimental study?

Back

An experimental study is a research method where the researcher manipulates one or more variables to observe the effect on another variable.

Front

What is the purpose of a survey?

Back

The purpose of a survey is to collect data from a group of individuals to understand their opinions, behaviors, or characteristics.

Front

What does it mean to keep interaction to a minimum in research?

Back

Keeping interaction to a minimum means that the researcher does not influence the subjects' behavior, allowing for more natural observations.

Front

What is the role of a researcher in an observational study?

Back

The role of a researcher in an observational study is to observe and record data without interfering with the subjects.

Front

What is the significance of sample size in research?

Back

Sample size is significant because larger samples tend to provide more reliable and valid results, reducing the margin of error.