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Practice each question, then open the answer or worked solution.
The number of times a particular observation occurs in a given data is called its
.
Solution:-
The number of times a particular observation occurs in a given data is called its Frequency.
When the number of observations is large, the observations are usually organised in groups of equal width called .
Solution:-
When the number of observations is large, the observations are usually organised in groups of equal width called class intervals.
The total number of outcomes when a coin is tossed is .
Solution:-
The total number of outcomes when a coin is tossed is 2.
The class size of the interval 80 – 85 is .
Solution:-
= 85 – 80
= 5
The class size of the interval 80 – 85 is 5.
In a histogram, __________ are drawn with width equal to a class interval without leaving any gap in between.
Solution:-
In a histogram bars are drawn with width equal to a class interval without leaving any gap in between.
When a dice is thrown, outcomes 1, 2, 3, 4, 5, 6 are equally .
Solution:-
When a dice is thrown, outcomes 1, 2, 3, 4, 5, 6 are equally likely.
In a histogram, class intervals and frequencies are taken along __________ axis and __________ axis.
Solution:-
In a histogram, class intervals and frequencies are taken along X axis and Y axis.
In the class intervals 10 –20, 20 –30, etc., respectively, 20 lies in the class .
Solution:-
In the class intervals 10 –20, 20 –30, etc., respectively, 20 lies in the class 20 – 30.
In questions 59 to 81, state whether the statements are true (T) or false (F).
In a pie chart a whole circle is divided into sectors.
Solution:-
True.
Pie chart shows the relationship between a whole and its parts.
The central angle of a sector in a pie chart cannot be more than 180o.
Solution:-
False.
The central angle of a sector in a pie chart is more than 180o. But, it cannot be more than 360o.