# Metrology and Quality Control - Mechanical Engineering (MCQ) questions and answers for Q. 5017

Q.  What is the graph (frequency vs cell) shown below called as?
- Published on 07 Aug 15

a. Bar diagram
b. Frequency histogram
c. Frequency bar chart
d. None of the above

#### Discussion

• Sravanthi   -Posted on 27 Oct 15
- Bar diagram, frequency histogram, Pi diagram, frequency bar chart, frequency polygon are the different diagrams used to represent data.

Frequency histograms:

- In frequency histogram, X axis represents cell interval and Y axis represents frequency.
- Cell frequency is proportional to height of the rectangles in the histogram.
- Two rectangles can be drawn side by side by different colors.

Frequency bar chart:

- In this chart, frequency distribution data is represented by bars. The bars are centered at the midpoint of the cell.

Bar diagram:

- In this diagram, the bars are separated from each other at equal intervals.
- Each bar is represented by a detail below to which it corresponds.

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