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Data Handling — Flashcards

ICSE · Class 7 · Mathematics

30 flashcards for Data Handling (ICSE Class 7 Mathematics) to test yourself on key terms and facts. Sample: "A class test has these marks: 43, 29, 9, 37"

90 questions30 flashcards4 formulas & key relations5 concepts

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30 Flashcards·
Raw data and arrayRangeTabulation of dataFrequency table conceptMean
Card 1Raw data and array

A class test has these marks: 43, 29, 9, 37, 23, 25, 16, 45, 16, 25, 23, 5, 14, 12, 16, 21, 21, 23, 21, 44, 45, 16, 45, 37, 23, 25, 37, 9, 5, 25. Write them in ascending order.

Answer

Step 1: Start with the smallest numbers. Step 2: Arrange all numbers from least to greatest. Answer: 5, 5, 9, 9, 12, 14, 16, 16, 16, 16, 21, 21, 21, 23, 23, 23, 25, 25, 25, 25, 29, 37, 37, 37, 43, 44,…

Card 2Range

Find the range of these numbers: 68, 76, 63, 75, 93, 83, 70, 115, 82, 105, 90, 103, 92, 52, 99, 73, 75, 63, 77, 71.

Answer

Step 1: Find the largest number = 115. Step 2: Find the smallest number = 52. Step 3: Use the formula: Range of given numbers = Largest number – smallest number. Step 4: Range = 115 - 52 = 63. Answer:…

Card 3Tabulation of data

Make a frequency distribution table for the numbers 4, 4, 5, 6, 7, 6, 5, 4, 4, 7, 8, 5, 7, 5, 5, 4, 6, 6, 5, 8.

Answer

Step 1: List the different values in order: 4, 5, 6, 7, 8. Step 2: Count how many times each value occurs. Step 3: Write the frequency table. Value | Frequency 4 | 5 5 | 6 6 | 4 7 | 3 8 | 2 Answer: T…

Card 4Frequency table concept

Why is a frequency distribution table useful for raw data?

Answer

Raw data is hard to read when there are many numbers. A frequency table groups the numbers and shows how often each value occurs. Example: In the data 4, 4, 5, 6, 7, 6, 5, 4, 4, 7, 8, 5, 7, 5, 5, 4, 6…

Card 5Mean

Find the mean of 26, 25, 40, 36, 50 and 45.

Answer

Step 1: Add all observations. 26 + 25 + 40 + 36 + 50 + 45 = 222 Step 2: Count the observations = 6 Step 3: Use the formula: Mean = Sum of all observations / Number of observations Step 4: Mean = 222 /…

Card 6Mean

Find the mean of 01, 06, 16, 10, 09, 23, 18, 27, 20, 17, 02, 22, 15, 12, 21, 25 and 11.

Answer

Step 1: Add all observations. 01 + 06 + 16 + 10 + 09 + 23 + 18 + 27 + 20 + 17 + 02 + 22 + 15 + 12 + 21 + 25 + 11 = 255 Step 2: Count the observations = 17 Step 3: Mean = 255 / 17 Step 4: Mean = 15 Ans…

Card 7Mean

Find the mean of the first 8 natural numbers.

Answer

Step 1: Write the numbers: 1, 2, 3, 4, 5, 6, 7, 8 Step 2: Add them: 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36 Step 3: Count them: 8 Step 4: Mean = 36 / 8 = 4.5 Answer: 4.5…

Card 8Mean

Find the mean of the first seven whole numbers.

Answer

Step 1: Write the numbers: 0, 1, 2, 3, 4, 5, 6 Step 2: Add them: 0 + 1 + 2 + 3 + 4 + 5 + 6 = 21 Step 3: Count them: 7 Step 4: Mean = 21 / 7 = 3 Answer: 3…

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Practise All

Frequently Asked Questions

What are the important topics in Data Handling for ICSE Class 7 Mathematics?
Key topics in Data Handling include Data, Raw Data, Array, and Types of Data, Tabulation and Frequency Distribution, Range, Mean. Study these first, then practise questions on each for Class 7 exams.
How many flashcards are available for Data Handling?
There are 30 flashcards for Data Handling covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Data Handling for Class 7 exams?
Learn the core ideas first, then work through the 90 practice questions on Data Handling. Revise definitions regularly and use flashcards for quick recall before the exam.

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 7 Mathematics Flashcards

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