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Vidaara.orgClass 8 · Mathematics
CodeVID-M08-17-FRQ-01
Data Collection & Frequency Tables - Assignment
Chapter: Data Representation
Topic: Collection of Data and Frequency Tables
Maximum Marks: 35
Time: 75 minutes
Name: ____________________ Roll No.: __________ Date: ____________

General Instructions

  • All questions are compulsory.
  • Section A carries 1 mark each, Section B 2 marks, Section C 3 marks and Section D 5 marks.
  • Show all working for Sections B, C and D. Only final answers are given at the end — for full solutions, raise your doubts with your teacher.
Section A — Multiple Choice Questions 5 × 1 = 5 marks
1.
Unorganised data is called:
  • A.grouped data
  • B.raw data
  • C.a graph
  • D.a mean
2.
The frequency is the number of times a value:
  • A.is added
  • B.occurs
  • C.is squared
  • D.is halved
3.
Tally marks are grouped in sets of:
  • A.$2$
  • B.$5$
  • C.$10$
  • D.$3$
4.
The range is the highest minus the:
  • A.mean
  • B.lowest value
  • C.mode
  • D.median
5.
A frequency table organises data and its:
  • A.colours
  • B.counts
  • C.names
  • D.shapes
Section B — Short Answer (2 marks) 4 × 2 = 8 marks
6.
Find the frequency of $4$ in $4, 4, 2, 4, 5$.
7.
Find the range of $8, 3, 12, 5$.
8.
Tally marks are grouped in sets of how many?
9.
What is unorganised data called?
Section C — Short Answer (3 marks) 4 × 3 = 12 marks
10.
Find the range of $25, 40, 15, 60, 35$.
11.
In $2, 3, 3, 3, 5, 5$, what is the frequency of $3$?
12.
A frequency table shows values and their:
13.
The total of all frequencies equals the number of:
Section D — Long Answer (5 marks) 2 × 5 = 10 marks
14.
The marks of $10$ students are $5, 8, 5, 7, 8, 5, 9, 8, 7, 5$. Make a frequency table and state the most frequent mark.
15.
For the data $12, 15, 12, 18, 15, 12, 20$, find the range and the frequency of $12$.

Answer Key

Section A — Multiple Choice Questions
  1. (B) raw data
  2. (B) occurs
  3. (B) $5$
  4. (B) lowest value
  5. (B) counts
Section B — Short Answer (2 marks)
  1. $3$.
  2. $9$.
  3. $5$.
  4. Raw data.
Section C — Short Answer (3 marks)
  1. $45$.
  2. $3$.
  3. Frequencies.
  4. Observations.
Section D — Long Answer (5 marks)
  1. $5\!:\!4,\ 7\!:\!2,\ 8\!:\!3,\ 9\!:\!1$; most frequent is $5$.
  2. Range $8$; frequency of $12$ is $3$.
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