# Histogram Calculator

A histogram is the graphical representation of data where data is grouped into continuous number ranges and each range corresponds to a vertical bar.

- The horizontal axis displays the number range.
- The vertical axis (frequency) represents the amount of data that is present in each range.

The number ranges depend upon the data that is being used.

## What is a Histogram Calculator?

A 'Histogram Calculator' is a free online tool that graphs the histogram for a given data. In this calculator, you can enter the intervals and frequency given in the data and the histogram for that data will be displayed within a few seconds.

NOTE: The Number of Bandwidth in the calculator is fixed.

## How to Use Histogram Calculator?

Follow the steps given below to use the calculator:

**Step 1:**The Slider can be used to change the Number of Bandwidth of the histogram.

## How to Compute a Histogram?

The process of making a histogram using the given data is described below:

**Step 1:**Choose a suitable scale to represent weights on the horizontal axis.**Step 2:**Choose a suitable scale to represent the frequencies on the vertical axis.**Step 3:**Then draw the bars corresponding to each of the given weights using their frequencies.

**Solved Example:**

Construct a histogram for the following frequency distribution table that describes the frequencies of weights of 25 students in a class.

Weight (in lbs) | Frequency (No. of Students) |

65 - 70 | 4 |

70 - 75 | 10 |

75 - 80 | 8 |

80 - 85 | 4 |

**Solution:**

Steps to draw a histogram:

**Step 1:**On the horizontal axis, we can choose the scale to be 1 unit = 11 lb. Since the weights in the table start from 65, not from 0, we give a break/kink on the X-axis.**Step 2:**On the vertical axis, the frequencies are varying from 4 to 10. Thus, we choose the scale to be 1 unit = 2**Step 3:**Then draw the bars corresponding to each of the given weights using their frequencies.