Paired data set

Definition

A paired data set consists of two sets of related data, where each value in one set is matched with a corresponding value in the other set. These pairs are often used to measure the relationship between two variables.

5 Must Know Facts For Your Next Test

1. Paired data sets are often visualized using scatter plots to identify correlations.
2. In statistical tests like t-tests, paired data sets are used to compare means between two related groups.
3. Each pair in a paired data set must have a direct correspondence for accurate analysis.
4. Correlation coefficients, such as Pearson's r, can be calculated from paired data sets to quantify the relationship between variables.
5. Paired data sets are commonly used in before-and-after studies or matched subjects designs.

Review Questions

Related terms

Scatter Plot: A type of graph that uses Cartesian coordinates to display values for typically two variables for a set of data.

Correlation Coefficient:

A numerical measure that quantifies the strength and direction of a relationship between two variables.

$t$-Test: $t$-Tests assess whether the means of two groups are statistically different from each other, often used with paired data.