# Examples of paired data

## What is an example of a paired sample?

The “

**driving after having 2 beers**” example is a case in which observations are paired by subject. In other words, both samples have the same subject, so that each subject is measured twice.## What is paired data in statistics example?

Paired data is

**where natural matching or coupling is possible**. Generally this would be data sets where every data point in one independent sample would be paired—uniquely—to a data point in another independent sample.## What is paired and unpaired data examples?

Take the penny problem as an example. If we gather 12 different pennies and each penny is included in data set 1 and data set 2, then the data are paired. If we gather 12 pennies and analyze 6 for data set 1 and 6 for data set 2, then the data are unpaired.

## What do you mean by paired data?

Paired data in statistics, often referred to as ordered pairs, refers to

**two variables in the individuals of a population that are linked together in order to determine the correlation between them**.## How do I know if the data is paired?

One way to analyze paired data is to

**perform a paired samples t-test**, which compares the means of two samples when each observation in one sample can be paired with an observation in the other sample. What is this? This test tells us whether the mean value is equal between the two datasets.## How do you know if data is paired or unpaired?

Scientific experiments often consist of comparing two or more sets of data. This data is described as unpaired or independent

**when the sets of data arise from separate individuals**or paired when it arises from the same individual at different points in time.## What is paired sample test?

The Paired Samples t Test

**compares the means of two measurements taken from the same individual, object, or related units**. These “paired” measurements can represent things like: A measurement taken at two different times (e.g., pre-test and post-test score with an intervention administered between the two time points)## What are paired observations?

Paired data

**arise when two of the same measurements are taken from the same subject, but under different experimental conditions**. Subjects often receive both a treatment Y1 and a control Y2. Pairing observations reduces the subject-to-subject variability in the response.## What is a paired t-test example?

A paired t-test is used when we are interested in the difference between two variables for the same subject. Often the two variables are separated by time. For example,

**in the Dixon and Massey data set we have cholesterol levels in 1952 and cholesterol levels in 1962 for each subject**.## What is a paired t-test example?

A paired t-test is used when we are interested in the difference between two variables for the same subject. Often the two variables are separated by time. For example,

**in the Dixon and Massey data set we have cholesterol levels in 1952 and cholesterol levels in 1962 for each subject**.## What is paired sample test?

The Paired Samples t Test

**compares the means of two measurements taken from the same individual, object, or related units**. These “paired” measurements can represent things like: A measurement taken at two different times (e.g., pre-test and post-test score with an intervention administered between the two time points)## What are paired observations?

Paired data

**arise when two of the same measurements are taken from the same subject, but under different experimental conditions**. Subjects often receive both a treatment Y1 and a control Y2. Pairing observations reduces the subject-to-subject variability in the response.## How do you know if its a paired t-test?

Paired t-test assumptions

**Subjects must be independent**. Measurements for one subject do not affect measurements for any other subject. Each of the paired measurements must be obtained from the same subject. For example, the before-and-after weight for a smoker in the example above must be from the same person.

## What is a paired test in statistics?

Paired T-Test. The paired sample t-test, sometimes called the dependent sample t-test, is

**a statistical procedure used to determine whether the mean difference between two sets of observations is zero**. In a paired sample t-test, each subject or entity is measured twice, resulting in pairs of observations.## What is the difference between paired and two sample t test?

**Two-sample t-test is used when the data of two samples are statistically independent, while the paired t-test is used when data is in the form of matched pairs**.