Describing Data Distributions

Front

What is a data distribution?

Back

A data distribution shows how values are spread or arranged in a dataset, indicating the frequency of each value.

Front

What does it mean if a distribution is symmetrical?

Back

A symmetrical distribution has a mirror image on either side of the center, meaning the left and right sides are identical.

Front

What is a skewed distribution?

Back

A skewed distribution is one where the data is not evenly distributed, causing a tail on one side.

Front

What does it mean if a distribution is skewed left?

Back

A left-skewed distribution has a longer tail on the left side, indicating that most data points are concentrated on the right.

Front

What does it mean if a distribution is skewed right?

Back

A right-skewed distribution has a longer tail on the right side, indicating that most data points are concentrated on the left.

Front

What is an outlier?

Back

An outlier is a data point that is significantly different from other observations in a dataset.

Front

What is a gap in a data distribution?

Back

A gap is a range of values in a dataset where no data points are present.

Front

What is a cluster in a data distribution?

Back

A cluster is a group of data points that are close together in value.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, using bars to show frequency.

Front

What is a bar graph?

Back

A bar graph is a chart that presents categorical data with rectangular bars representing the frequency of each category.