Statistics
ICSE · Class 9 · Mathematics
Flashcards for Statistics — ICSE Class 9 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
What is Statistics? Give both singular and plural meanings.
Answer
Singular: Statistics is a branch of mathematics that deals with statistical principles and methods used in collecting, analyzing, and interpreting data. Plural: Statistics refers to numerical data co
Define a Variable and give examples.
Answer
A variable is a quantity that can vary from one individual to another. Examples: height, weight, age, marks of students, number of children in a family, daily temperature, rainfall records.
What is the difference between Continuous and Discrete variables? Give examples of each.
Answer
Continuous Variable: Can take any numerical value within a certain range. Examples: wages, heights, rainfall, time, temperature Discrete Variable: Cannot take all possible numerical values between tw
What is the difference between Raw Data and Arrayed Data?
Answer
Raw Data (Ungrouped Data): Data in the form as originally collected, without any arrangement. Example: 08, 15, 23, 16, 46, 32, 42, 37, 28, 19 Arrayed Data: Same data arranged in ascending or descendi
Define Frequency and calculate the frequency of each number in this data: 1, 2, 0, 3, 2, 1, 5, 4, 3, 2, 1, 2
Answer
Frequency: The number of times a particular data value appears in a given set of data. Solution: 0 appears 1 time → frequency = 1 1 appears 3 times → frequency = 3 2 appears 4 times → frequency = 4 3
What is a Frequency Distribution Table and how do you create one?
Answer
A frequency distribution table is a tabular arrangement showing data values with their corresponding frequencies. Steps to create: 1. List data values in ascending order in first column 2. Use tally
What is the difference between Grouped and Ungrouped Frequency Distribution?
Answer
Ungrouped Frequency Distribution: Shows frequency of individual data values. Example: Size 3 has frequency 4, Size 4 has frequency 3 Grouped Frequency Distribution: Data is organized into class inter
What are Class Intervals and Class Limits? Give an example.
Answer
Class Interval: A range of values that groups data together. Class Limits: The boundary values of a class interval. Example: In class interval 10-20: - Lower class limit = 10 - Upper class limit = 20
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What are the important topics in Statistics for ICSE Class 9 Mathematics?
Statistics covers several key topics that are frequently asked in ICSE Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Statistics — ICSE Class 9 Mathematics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
How many flashcards are available for Statistics?
There are 20 flashcards for Statistics covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.
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