Skip to content
p.paperbanao.
Continue

Punjab (PTB) · Chapter test · Free

9th Class Mathematics Chapter 12 TestUNIT 12: Information Handling

30 marks · 40 minutes · 21 questions. Covers: UNIT 12: Information Handling.

Your school name

9th Class Mathematics Chapter 12 Test

9th Class · Mathematics · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. What is the formula for the weighted mean? 

    1. Weighted=

    2. Weighted mean = ?(wx) × Ew

    3. Weighted mean = ?(wx) – S? 

    4. Weighted mean = ?(wx) + Ew

  2. What is the arithmetic mean of the data set: 4, 6, 10, 12, 15, 20, 25, 28, 30? 

    1. 16.67

    2. 18.00

    3. 20.00

    4. 22.00

  3. What is the formula to calculate the size of class limits? 

    1. Size = Range / Number of classes 

    2. Size = Range x Number of classes 

    3. Size = Range + Number of classes 

    4. Size = Range - Number of classes 

  4. What is the median of the data set: 55, 53, 54, 58, 60, 61, 62, 56, 57, 51, 63? 

    1. 56

    2. 57

    3. 58

    4. 59

  5. What is the measure that gives the center of the data called? 

    1. Measure of dispersion 

    2. Measure of central tendency

    3. Measure of frequency

    4. Measure of range

  6. What is the term for the most frequently occurring value in a data set? 

    1. Mean

    2. Median 

    3. Mode 

    4. Range

  7. The difference between the greatest value and the smallest value is called:

    1. Class limit

    2.  Midpoint

    3. Relative frequency

    4. Range

  8. Which of the following is an example of ungrouped data?

    1. Marks of students arranged in classes

    2. Number of toys sold in a month 

    3. Height of students in a class

    4. Temperature recorded daily

  9. How used the word data handling first:

    1. Netwon

    2. Henry 

    3. Sir Rondddfisher

    4. Arther calay

  10. What is the term for the midpoint of a class interval? 

    1. Class boundary

    2. Class mark

    3. Class limit

    4. Class frequency

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. The arithmetic mean of 45 numbers is 80. Find their sum.

  2. Following are the number of telephone calls made in a week to 30 teachers of high school:

    5 8 11 25 13 16 20 17 15 16 30 21 14 18 19
    6 22 26 15 19 35 29 31 23 25 20 10 9 7 26

    Construct a frequency distribution with number of classes?

  3. Usman rolled a fair dice eight times. Each time their sum was recorded as 8,5,6,6,9,4,3,11. Find the median and mode of the sum.

  4. The following distribution represents the scores achieved by a group of chemistry students in the chemistry laboratory:

    Scores 24-28 29-33 34-38 39-43 44-48 49-53 Total
    No. of students 3 6 12 23 15 6 65

    What is the upper limit of the last class?

  5. Differentiate between discrete and continuous data.

  6. Calculate the arithmetic mean from the following information:  and n = 10

  7. Given below are marks obtained by 45 students in the monthly test of Biology:

    Marks 20-24 25-29 30-34 35-39 40-44 45-49
    No. of students 05 08 12 15 03 02

    With the reference of the above table find the following: The class interval with the least frequency.

  8. Define frequency.

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. The heights (in inches) of 200 students are recorded in the following frequency distribution. Find the mean height of the student by short formula:

    Height (x) (in inches) 51 52 53 54 55 56 57 58 59 60
    Frequency (f) 2 5 8 24 55 45 38 16 6 1

  2. The marks obtained by the students of Grade-10 in mathematics test were grouped into the following frequency distribution:

    Marks 35-37 38-44 45-54 55-61 62-67 68-72
    Frequency 1 2 16 13 9 3

    Draw a histogram for the above distribution.

  3. Given below is the frequency distribution derived by making a substitution as D=X-20. Calculate the arithmetic mean:

    D -6 -4 -2 0 2 4 6
    f 1 3 6 20 26 12 2