Table of Contents

## How do scatter plots and histograms differ from line graphs?

Scatter plots are similar to line graphs in that they start with mapping quantitative data points. The difference is that with a scatter plot, the decision is made that the individual points should not be connected directly together with a line but, instead express a trend.

## How does a histogram and box plot differ from the information that is shown?

Histograms and box plots are very similar in that they both help to visualize and describe numeric data. Although histograms are better in determining the underlying distribution of the data, box plots allow you to compare multiple data sets better than histograms as they are less detailed and take up less space.

**How can you differentiate a histogram from a bar graph?**

A histogram represents the frequency distribution of continuous variables. Conversely, a bar graph is a diagrammatic comparison of discrete variables. Histogram presents numerical data whereas bar graph shows categorical data. The histogram is drawn in such a way that there is no gap between the bars.

**What is marginal histogram?**

Marginal histograms are histograms added to the margin of each axis of a scatter plot for analyzing the distribution of each measure.

### What are scatter plots and histograms best used to visualize?

A histogram is a special type of bar chart. It can be used to display variation in weight — but can also be used to look at other variables such as size, time, or temperature. A chart that shows the relationship between two variables is a scatter plot.

### What is the difference between a bar graph and a histogram?

Histograms visualize quantitative data or numerical data, whereas bar charts display categorical variables. In most instances, the numerical data in a histogram will be continuous (having infinite values). Attempting to display all possible values of a continuous variable along an axis would be foolish.

**When should you use a histogram?**

Use a histogram when:

- The data are numerical.
- You want to see the shape of the data’s distribution, especially when determining whether the output of a process is distributed approximately normally.
- Analyzing whether a process can meet the customer’s requirements.

**What is the significance of histogram?**

It can provide information on the degree of variation of the data and show the distribution pattern of the data by bar graphing the number of units in each class or category. A histogram takes continuous (measured) data like temperature, time, and weight, for example, and displays its distribution.

## What do histograms show that box plots don t?

Histograms give a good sense of the distribution of a variable. Box plots attempt to do the same thing however, don’t give as good of a picture of the distribution of this variable.

## What is the difference between bar plot and histogram?

Histograms visualize quantitative data or numerical data, whereas bar charts display categorical variables. In most instances, the numerical data in a histogram will be continuous (having infinite values).