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Question 10) :- The Progressive sum of Frequencies From the last class to the lower boundary of particular class is called d) L.C.F .
Explanation :- The lower class boundary of a class is defined as the average of the lower limit of the class in question and the upper limit of the previous class.
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Question 11) :- All the bars in a bar graph have B) Same width.
Explanation :- Each bar or column of the bar graph has equal width. Further, all the bars have a common base.
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Question 12) :- The height of a rectangle in a histogram shows the D) Frequency of the class .
Explanation :-
→ Frequency of class = (minimum Class size / class size) * Frequency .
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Question 13 :- Histogram is a graphical representation of frequency distribution of exclusive class intervals.
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Question 14 :- cumulative frequency curve is also called Ogive.
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Question 15:- when the cumulative frequencies are plotted against the end points of their respective class intervals and joined together , the resultant graph is called cumulative frequency polygon....
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