### Chap 16 Data Handling: Histograms - Comparing with Bar Charts

Below are 2 examples of Bar Charts.
Let's compare Histograms and Bar charts...
• What difference do you observe?
• When do you use a bar chart and when would you use a histogram?

1. What difference do you observe?

The different bars in the bar chart represents different subjects /labels while the bars of the histograms are representing the same label.

There is a gap in between each bars while there are usually no gaps in between the bars of the histograms.

When do you use a bar chart and when would you use a histogram?

I would use the bar graph when I am comparing the quantities of the different subjects.

I would use a histogram if I am observing the the subject in a period of time.

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3. The difference between a bar graph and a histogram is that a bar graph has gaps between the bars but a histogram does not.

I would use a bar graph when I want to compare the various revenues of different companies. I would use a histogram when I want to compare the number of companies in each class of revenues.

4. Unlike bar charts, histograms do not have spaces between the columns.

I would use a bar chart when I need to compare the quantities of something between different things. For example the population of different countries.
I would use a histogram to compare the frequency of something with the same thing but different quantities. For example, the frequency of books borrowed at a library in different quantities.

5. What difference do you observe?
When do you use a bar chart and when would you use a histogram?

Histograms do not have spaces between each column. Histograms have numerical values on the y axis, but bar graphs have different variables/categories on the y axis.

I would use a bar chart when i am comparing the frequencies of different categories/variables, and i would use a histogram when i am comparing the frequencies of the same category/variable.

6. What difference do you observe?

Histograms are together but bar graphs are not. Also, histograms do not have word labels on the horizontal axis but have numbers compared to bar graphs that have word labels.

When do you use a bar chart and when would you use a histogram?
I would use a bar chart when I am comparing different variables that do not go in sequence. I would use a histogram when I am comparing variables that and go in sequence.

7. What difference do you observe?

The different bars in a bar graphs represent different things/labels while bars on a histogram represent the same things. The horizontal axis of a histogram are usually of numbers with the same interval while bar graphs can represent different things.

When do you use a bar chart and when would you use a histogram?

A bar chart would be used for comparing things of different subjects. A histogram would be used to show the changes.

~Nina Ding

8. -Both bars in the bar graph and in the histograms are of equal width.

-Bars in the bar graphs have equal spacing between them but the histograms do not have spacing at all.

A bar chart would be used for comparing different quantities. A histogram is used to compare the changes.

9. What difference do you observe?

Histograms are on the same horizontal axis/together but bar graphs are not. Also, histograms do not have word labels on the horizontal axis but have numbers compared to bar graphs that have word labels. Bar graphs can be horizontal/vertical.

When do you use a bar chart and when would you use a histogram?

I would use a bar chart when I am comparing different variables that do not go in sequence/difference/variable. I would use a histogram when I am comparing variables that and go in sequence.

10. What difference do you observe?
The have gaps in between each bar. Each bar represents a different objects. The vertical axis of the histogram always represent the frequency. While the vertical axis of the bar graph represents the number of an object.

When do you use a bar chart and when would you use a histogram?
I would use bar chart if i want to compare the quantity of an object and i would use if i want to find out the frequency of an object and the changes over a period of time.

11. Below are 2 examples of Bar Charts.
Let's compare Histograms and Bar charts...
What difference do you observe?
Histograms have no gaps in between the bars but Bar Charts has gaps in between bars.
When do you use a bar chart and when would you use a histogram?
A histogram can be only used to show comparison of frequency of things that are of similar genre but bar graphs can be used to show comparison between different objects.

12. What Difference do you observe?
~The vertical axis on a histogram has a arrow, unlike a bar graph
When do you use a bar chart and when would you use a histogram?
~I would use a histogram to show the past's frequency of a particular matter and I would use a bar chart to compare some things.
PS This is Ishani

13. The vertical axis in a bar graph does not represent frequencies while a histogram always does. The different bars in the bar chart represents different subjects/labels while the bars of the histograms represent the same label.

I would use a histogram to compare frequencies.

14. What difference do you observe?
Histograms do not have gaps between the bars while Bar Charts have gaps.
When do you use a bar chart and when would you use a histogram?
I would use a histogram to show a frequency of something while I would use a Bar Chart for comparison.

15. Histograms have no spaces in between the bars and on the vertical axis,it will be labeled as frequency .

Histograms are used when comparing the same group of things

16. (A) Histograms have no spacing in between the bars but bar graphs have.

(B)Histograms are normally used for frequency but bar graphs can be used and any situation as long as it has a relationship.

17. What difference do I observe?
Histogram's Y axis represents frequency while a bar graphs Y axis could be used to represent type.
I would use a histogram when I am comparing objects of the same type, group or category.
I would use a bar graph when I am comparing objects of different groups.

18. What difference do you observe?

The horizontal axis of bar chart represents different object most of the time whereas in the histogram,horizontal axis represents amount.

There is gap in between the bars of the bar chart but none in between the histogram.

I would use histogram to represents frequency of something
I would use bar charts to compare things that are different when it is comparing the same thing

19. Chan Shawn Kit4/06/2011 07:26:00 AM

1) All the 'bars' are not connected to each other as it is in histograms. The horizontal axis of bar charts represents the 'group' of different objects while the horizontal axis of histograms represents numbers/words in 1 group.

2) Bar chart is used when we want to interpret more than 1 group of object while histograms are used to compare objects within a single group.