difference between abar graph and a histogram?

Question

hello
what is the difference between abar graph and a histogram?

thanks
= ]

Answer 1

Bar charts are used to summarise nominal or ordinal data.

Bar charts can be displayed horizontally or vertically and they are usually drawn with a gap between the bars (rectangles), whereas the bars of a histogram are drawn immediately next to each other.

The histogram is only appropriate for variables whose values are numerical and measured on an interval scale. It is generally used when dealing with large data sets (>100 observations), when stem and leaf plots become tedious to construct. A histogram can also help detect any unusual observations (outliers), or any gaps in the data set.

Answer 2

bar chart, also known as a bar graph, is a chart with rectangular bars of lengths usually proportional to the magnitudes or frequencies of what they represent. Bar charts are used for comparing two or more values. The bars can be horizontally or vertically oriented. Sometimes a stretched graphic is used instead of a solid bar.
bar chart is marked off with a series of lines called grid lines.


In statistics, a histogram is a graphical display of tabulated frequencies. A histogram is the graphical version of a table which shows what proportion of cases fall into each of several or many specified categories. The histogram differs from a bar chart in that it is the area of the bar that denotes the value, not the height, a crucial distinction when the categories are not of uniform width (Lancaster, 1974). The categories are usually specified as non-overlapping intervals of some variable. The categories (bars) must be adjacent.

The word histogram is derived from histos and gramma in Greek, the first meaning web or mast and the second meaning drawing, record or writing. A histogram of something is thus, etymologically speaking, a drawing of the web of this something.

The histogram is one of the seven basic tools of quality control, which also include the Pareto chart, check sheet, control chart, cause-and-effect diagram, flowchart, and scatter diagram. See also the glossary of quality management.

A generalization of the histogram is kernel smoothing techniques. This will construct a very smooth Probability density function from the supplied data.

Answer 3

They do look very much alike, although on a bar graph the bars should not be touching each other, whereas on a histogram the bars should touch. The other difference is that a bar graph is used for categorical data, like for example how many freshman, sophomores, etc. are going to prom. The words "freshman", "sophomore", etc. would be along the bottom, and each would have a bar.

A histogram, on the other hand, is a tally of quantitative data. For example, how many car models get what gas mileage. Along the bottom would be 15-20 mpg, 20-25 mpg, etc. with a bar for each range. (Sometimes they just put the middle number of the range under the bar.)

Short answer: Bar graphs have words along the bottom and the bars don't touch. Histograms have numbers along the bottom, and the bars do touch.

Answer 4

Im pretty sure theyre all the same although a histogram groups the data on its bars eg, assume there are 3 boys and 3 girls and their heights are plotted on a bar graph, on the bar graph, the bars represent a single person but on a histogram, they are grouped into boys and girls.

Answer 5

Histogram is a bar showing the count of data points between a range of values on the x-axis. A bar graph is just bars showing the value of data points.

Answer 6

It seems like a histogram always has the bars right next to each other, whereas this does not seem to always be true for bar graphs.

Answer 7

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