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.
Histogram Calculator
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 on Histogram Calculator
Example:
Construct a histogram for the following frequency distribution table that describes the frequencies of weights of 25 students in a class and verify it using the histogram calculator.
| 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.
