Histogram

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges (bins).

Front

How does a histogram differ from a bar graph?

Back

A histogram displays continuous data and shows frequency distributions, while a bar graph represents categorical data with distinct bars.

Front

What is the purpose of using a histogram?

Back

Histograms are used to visualize the distribution of data, identify patterns, and understand the underlying frequency of data points.

Front

What are bins in a histogram?

Back

Bins are the intervals or ranges into which data points are grouped in a histogram, determining the width of each bar.

Front

How do you determine the number of bins for a histogram?

Back

The number of bins can be determined using the Sturges' formula: k = 1 + 3.322 log(n), where k is the number of bins and n is the number of data points.

Front

What does it mean if a histogram is skewed to the right?

Back

A right-skewed histogram indicates that the majority of data points are concentrated on the left, with a long tail extending to the right.

Front

What does it mean if a histogram is skewed to the left?

Back

A left-skewed histogram indicates that the majority of data points are concentrated on the right, with a long tail extending to the left.

Front

What is a symmetric histogram?

Back

A symmetric histogram has a balanced shape, where the left and right sides are mirror images of each other, indicating a normal distribution.

Front

What is bimodal distribution in a histogram?

Back

A bimodal distribution has two distinct peaks or modes, indicating that there are two prevalent groups within the data.

Front

How can you identify outliers in a histogram?

Back

Outliers can be identified as bars that are significantly taller or shorter than the others, indicating data points that fall far from the main distribution.