Saturday, March 12, 2011

statics test paper for class 8th

1. If a die is thrown once, what is the probability of getting a prime number?

2. A coin is tossed 200times and tail is obtained 128 times. Now, if a coin is tossed at random, what is the probability of getting a tail?

3. In 100 throws of a dice, 5 is obtained 42 times. In a random throw, what is the probability of getting a 5?

4. A bag has 6 red balls and 8green balls. A ball is drawn from a bag without looking in to the bag. What is the probability of getting a green ball?

5. What is the probability of occurrence of an event?

6. There are 216workers in a factory and in which 75are laborers. What would be the central angle of the sector representing laborers in the pie chart ?

7. If 45%of the people residing in a locality are Hindus, then what is the central angle of the sector representing the Hindus in the pie chart?

8. The weekly pocket expenses (in rupees) of 30students of a class are given below:

62 ,80 ,110 ; 75 ; 84 ; 73 , 60 , 62, 100 , 87 , 78 , 94 ,117, 86, 65, 68,; 90,; 80,118 ,72; 95; 72; 103; 96; 64; 94; 87; 85; 105; 115 Construct a frequency table with class intervals 60-70 and so on.

9. The marks of a student in different subject are given below: Represent the below data by a bar graph.


Subject
     Maths
Science
Hindi
English
Social science
Marks
    75
     70
    50
    55
           65


10. The monthly income of a family is Rs14400. The monthly expenditure of the family on various items is given below

Item
Rent
Food
Clothing
Education
Savings
Expenditure
4000
5400
2800
1800
400





Represent the above data by a pie chart.

11. The data on religion wise division of 1080 workers of a factory are given below:
   
    Religion
Hindu
Muslim
Sikh
Christian
   Numbers of workers
450
270
255
105


Represent the above data by a pie chart.

12. Fill in the blanks

1. A pictograph is __________ 
 2. A Bar Graph is ___________

3. Frequency is _____________ 

 4. Upper limit of class interval 30-40 is __

5. Class size of class interval 40-90 is ___________

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