Tag: frequency polygons

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Multiple choice economics frequency polygons collection, organisation and presentation of data frequency polygon and frequency curve diagrammatic presentation of data

From the below mentioned what, if missed, makes the graphic presentation incomplete

  1. Unit of measurement

  2. Suitable scale

  3. Suitable title

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A complete graphic presentation requires a title, a clear scale, and units of measurement to be interpretable and accurate. Missing any of these renders the graph incomplete.

Multiple choice economics frequency polygons collection, organisation and presentation of data frequency polygon and frequency curve diagrammatic presentation of data

Graph is a useful tool as _______________.

  1. only limited information can be achieved

  2. information provided is not useful for an expert

  3. not precisely correct

  4. it does not require that the person who is using graph should know mathematics
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The statement is grammatically awkward but conveys that graphs make data accessible without requiring mathematical expertise from the user. However, the phrasing is poor and the logic questionable - graphs do require some mathematical understanding to interpret correctly.

Multiple choice maths frequency polygons data handling and analysis frequency polygon and frequency curve diagrammatic presentation of data

For drawing a frequency polygon of a continous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abcissae are respectively :

  1. upper limits of the classes

  2. lower limits of the classes

  3. class marks of the classes

  4. upper limits of perceeding classes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

We draw the class marks on the abscissae, class marks are the mean of lower and upper limit of the class intervals.