Tag: histograms for non-uniform class widths

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Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

With the help of histogram we can prepare _________.

  1. frequency polygon

  2. frequency curve

  3. frequency distribution

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

A histogram serves as the foundation for constructing other frequency-based visualizations like frequency polygons and frequency curves.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

In a histogram with equal class intervals; heights of bar are proportional to _________.

  1. mid-vales of the class

  2. frequencies of respective classes

  3. either (a) or (b)

  4. neither (a) nor (b)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a histogram with equal class intervals, the area of the rectangle is proportional to the frequency. Since the width is constant, the height must be proportional to the frequency.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

Classification is applicable in case of  ______.

  1. quantitative data

  2. qualitative data

  3. both (a) and (b)

  4. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Classification is the process of arranging data into groups or classes based on common characteristics, which applies to both quantitative (numerical) and qualitative (categorical) data.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

The following frequency distribution is classified as 

Classes Frequency
0-50 25
0-30 18
0-10 5

  1. cumulative distribution in less than type

  2. Cumulative distribution in more than type

  3. discrete frequency distribution

  4. cumulative frequency distribution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The data shows cumulative frequencies (5, 18, 25) for increasing upper boundaries (10, 30, 50), which is the definition of a 'less than' cumulative frequency distribution.

Multiple choice economics graphical representation revisiting histograms histogram histograms histograms for non-uniform class widths histograms with unequal class intervals

A core distribution data is given for an inventory measuring physical fitness. The type of graph that will be used to display the information will be _______________.

  1. Histogram

  2. Line graph

  3. Pie chart

  4. Bar graph
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A histogram is the appropriate choice for displaying continuous grouped frequency distribution data measuring physical fitness. Histograms are specifically designed for continuous data organized into class intervals, which is typical for physical fitness measurements like height, weight, or endurance scores.

Multiple choice maths bar graphs histograms for non-uniform class widths histograms with unequal class intervals revisiting histograms

The most common form of diagrammatic representation of a grouped frequency distribution is -

  1. Ogive

  2. Histogram

  3. Frequency polygon

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Answer:- B) Histogram

Reason:-
Histogram is easy to use and we can plot the curve, also we can find the areas of adjoining rectangles which is proportional to class frequencies.

Multiple choice maths bar graphs histograms for non-uniform class widths histograms with unequal class intervals revisiting histograms

When rectangles are drawn with the areas proportional to the frequencies of respective class intervals, what is the diagram called? 

  1. Bar graph

  2. Frequency polygon

  3. Pie graph

  4. Histogram
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The histograms are diagrams which represent the class interval and the frequency in the form of a rectangle. 

There will be as many adjoining rectangles as there are class intervals. 
So, when rectangles are drawn with the areas proportional to the frequencies of respective class intervals, the diagram called Histogram.
Therefore, option D is correct.

Multiple choice maths bar graphs histograms for non-uniform class widths histograms with unequal class intervals revisiting histograms

In histogram, the height of rectangle shows _____

  1. width of the class

  2. upper limit of the class

  3. lower limit of the class

  4. frequency of the class
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A histogram is a display of statistical information that uses rectangles to show the frequency of data items in successive numerical intervals of equal size.

Hence, height of the rectangle represents the frequency of the class.