Data Analytics

Descriptive Statistics

Summary statistics that quantitatively describe or summarize features of a dataset.

Mean

The average of a set of values.

Median

The middle value of a data set when it is ordered.

Mode

The value that appears most frequently in a data set.

Range

The difference between the highest and lowest values.

Variance

A measure of how far each number in the dataset is from the mean.

Standard Deviation

The square root of the variance, indicating how much the data varies from the mean.

Histograms

A graphical representation of the distribution of numerical data.

Box Plots

A standardized way of displaying the distribution of data based on a five-number summary.

Scatter Plots

A plot that shows the relationship between two quantitative variables.

Importance of Descriptive Statistics

Helps in understanding trends, patterns, and anomalies within the data.

Why are Descriptive Statistics useful?

They provide a quick overview of the data set before conducting further analyses and aid in making informed decisions.