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Frequency curve is drawn from frequency polygon by smoothening the vertices.

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Important Questions on Statistics

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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
The following table shows the number of students enrolled in different streams in a particular college.
Science Arts Commerce Vocational
Boys Girls Boys Girls Boys Girls Boys Girls
32 18 28 45 42 42 13 30

 The ratio of the number of girls studying Arts to the number of girls studying in all other streams is:

 

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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data

Histogram given shows the number of people owning the different number of books.

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The total number of people surveyed is_____.

MEDIUM
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
The histogram representing the marks obtained by 60 students in a Mathematics examination.
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What is the total number of students who obtained more than or equal to 80 marks in the examination?
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
The total area of the histogram is _____ to the total frequency of the given data.
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
Histogram is a
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
_____ is a graphical representation of continuous frequency distribution with rectangles.
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
The histogram representing the marks obtained by 60 students in a Mathematics examination.
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If the minimum pass marks was 40, how many students failed?
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
In a histogram _____ are drawn with width equal to a class interval without leaving any gap in between.
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
A histogram is a bar chart which is constructed so that the _____ of each bar is proportional to the number of items in each group. 
MEDIUM
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data

Bar graphs of grouped data are called _____ .

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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
Frequency curve is drawn from frequency polygon by _____ the vertices.
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
The class mark for a class interval 10-20 is
EASY
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
In a histogram, _____ are drawn with width equal to a class interval without leaving any gap in between. 
MEDIUM
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
The histogram representing the marks obtained by 60 students in a Mathematics examination.
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How many students were awarded merit, if the minimum marks required for it are 80?
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data

Histogram given on the right shows the number of people owning the different number of books. Answer 47 to 50 based
on it.

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The number of people owning books less than 40 is _____.

MEDIUM
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data

Following histogram shows the number of people owning the different number of books.

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The number of people owning books more than 60 is _____.

EASY
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
Histogram is a graphical representation of _____ data.
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Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
A _____ is a graphical representation of a frequency distribution of a grouped data.
EASY
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data

Histogram given on the right shows the number of people owning the different number of books. Answer 47 to 50 based
on it.

Question Image  

The number of people having books more than 20 and less than 40 is_____.

EASY
Mathematics>Statistics and Probability>Statistics>Frequency Table and Histogram of Classified Data
In a histogram, the length of the rectangle is used to represent the _____. frequency / range