Question

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Answer 1

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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Answer 2

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The progressive sum of frequencies from the last class to the lower boundary of particular class is called:

LCF is the correct answer.

Explanation: As the Class boundary is the midpoint of the upper class limit of one class and the lower class limit of the subsequent class.

All the bars in a bar graph have:

Same width is the correct answer.

Explanation: All the columns in bar graph are of the same width.

The height of a rectangle in a histogram shows the:

Frequency of the class is the correct answer.

Explanation:- Class frequency refers to the number of observations in each class.

Histogram is the graphical representation of exclusive class intervals.

Commulative frequency curve is also called Ogive.

When the comulative frequencies are plotted against the end points of their respective class intervals and joined together the resultant graph is called Comulative Frequency Polygon.