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Class 9 Maths Chapter 14 Statistics Quiz 1 (25 MCQs)

Quiz Instructions

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1. What is a the meaning for "median" ?
2. Say 'TRUE' or 'FALSE'In a histogram the area of each rectangle is proportional to the class size of the corresponding class interval
3. The class mark of the class 16-24 is .....
4. If class marks of a distribution are 17, 25, 33, 41, 49, 57 then the width of each class interval is .....
5. The collection of information, collected for a purpose is called:
6. Difference between maximum and minimum observation is called
7. The scores of a student in five tests:10; 8; 13; x and 9.Knowing that the average (mean) of these five scores is 12, then x =
8. In the class intervals 40-50, 50-60, the number 50 is included in which of the following?
9. The mean of x-1, x + 1, x + 3 and x + 5 is .....
10. Mode of 1, 6, 4, 5, 4, 6, 7, 8, 6 is
11. Find the range of the following data:25, 18, 20, 22, 16, 6, 17, 15, 12, 30, 32, 10, 19, 8, 11, 20.
12. If marks of students of a class are arranged in ascending order, then it is called an .....
13. To find the average or mean of a set of numbers, add up all the items and divide by .....
14. The mode of a frequency distribution is obtained graphically from
15. Median is after arranging the observation in ascending order
16. The ratio of the sum of observations and the total number of observation is called
17. Class mark of a particular class is 7.5 and class size is 10 find the class interval
18. The marks obtained by 17 students in a mathematics test out of 100 are given below:91, 82, 100, 100, 96, 65, 82, 76, 79, 90, 46, 64, 72, 68, 66, 48, 49. Find the range of the data
19. In the class intervals 10-20, 20-30 the number 20 is included in
20. If each observation of the data is increased by 5, then their mean .....
21. How do you find the median of a data set that has two middle numbers?
22. The sum of the percentages is always:
23. If x be the mid-point and 1 be the upper class limit of a class in a continuous frequency distribution. What is the lower limit of the class?
24. 11-20, 21-30, 31-40, the classes are called
25. What is frequency?
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