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Statistics — Practice Quiz

ICSE · Class 9 · Mathematics

Try a 4-question quiz on Statistics for ICSE Class 9 Mathematics: tap an answer to check it and see why. 41 questions in the full chapter test.

41 questions30 flashcards5 concepts

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An illustration comparing raw (ungrouped) data, arrayed data (sorted), and tabulated data (organized in a basic table with categories and totals).
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Quick Quiz: Statistics

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1

A class of 20 students scored the following marks out of 10: 7, 8, 6, 9, 7, 8, 5, 6, 7, 8, 9, 6, 7, 8, 5, 6, 7, 8, 9, 6. What is the frequency of the score 7?

2

In a frequency distribution table with class intervals 10-20, 20-30, 30-40, the frequencies are 5, 8, and 3 respectively. What is the cumulative frequency of the class 30-40?

3

What is the class mark of the class interval 25-35?

4

In the data set: 12, 15, 18, 12, 20, 15, 12, what is the range?

41 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following represent discrete variables?

Show answer

Number of students in a class, Number of books in a library, Number of cars in a parking lot

Discrete variables can only take specific whole number values and cannot be subdivided. Number of students, books, and cars are countable items. Height and weight are continuous variables as they can take any value within a range.

2multiple choice

A frequency distribution has class intervals: 0-10, 10-20, 20-30, 30-40 with frequencies 3, 7, 5, 2 respectively. How many observations are there in total?

Show answer

17

Total observations = Sum of all frequencies = 3 + 7 + 5 + 2 = 17. Each frequency represents the count of observations in that particular class interval.

3multiple choice

What is the class size for the class interval 45-55?

Show answer

10

Class size = Upper limit - Lower limit = 55 - 45 = 10. Class size represents the width or span of the class interval.

4multiple correct

Which of the following are characteristics of a histogram?

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Rectangles touch each other, Used for continuous data, Height represents frequency

In a histogram, rectangles touch each other (no gaps) because it represents continuous data. The height of each rectangle represents the frequency of that class interval. Bar charts have gaps, not histograms.

+37 more questions on Statistics (ICSE Class 9 Mathematics)

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Frequently Asked Questions

What are the important topics in Statistics for ICSE Class 9 Mathematics?
Key topics in Statistics include Data, Statistics, and Variable, Tabulation, Frequency, and Frequency Distribution, Grouped Frequency Distribution and Class Intervals, Class-Size and Class-Mark. Study these first, then practise questions on each for Class 9 exams.
How many practice questions are there for Statistics?
There are 41 questions on Statistics. Try the 4-question sample quiz on this page first; each answer shows an explanation when you tap it.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 9 Mathematics Practice Quiz

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