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- Grouped Frequency Distribution | Statistics | Assessment | English | Grade 9
Grouped Frequency Distribution | Statistics | Assessment | English | Grade 9
Authored by Tic Tac Learn
Mathematics
9th Grade
CCSS covered

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The class mark of the class 250 - 280 is ______
255
260
265
270
Answer explanation
Class mark = (Lower limit + Upper limit)/2 = (250 + 280)/2 = 265
Tags
CCSS.7.SP.B.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The marks obtained by 10 students in a Mathematics test(out of 100) are given below. 48, 52, 62, 68, 72, 75, 100, 92, 38, 84 Determine the range of the marks.
62
68
60
72
Answer explanation
Range = Highest marks - Lowest marks = 100 - 38 = 62
Tags
CCSS.6.SP.B.5
CCSS.6.SP.A.3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a frequency distribution, the mid - value of a class is 25 and the width of the class is 20. The lower limit of the class is _____
25
15
10
20
Answer explanation
Mid - value = 25 Width = 20 Lower limit = Mid value of class - (Width/2) = 25 - (20/2) = 25 - 10 = 15
Tags
CCSS.6.SP.A.2
CCSS.6.EE.B.7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The class mark of a class is 45 and if the upper limit of that class is 60, then its lower limit is ______
25
40
50
30
Answer explanation
Upper limit = 60 Class mark = 45 Lower limit = x Now, Class mark = (Lower limit + Upper limit)/2 45 = (x + 60)/2 90 = x + 60 x = 90 - 60 x = 30
Tags
CCSS.6.EE.B.7
CCSS.6.EE.B.5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The mid - value of a class interval is 52. If the class size is 10, find the upper and lower limits of the class.
48 - 58
45 - 55
47 - 57
50 - 60
Answer explanation
Let upper limit and lower limit be x and y, (x + y) /2 = 52 ∴ x + y = 104 ......(1) Now, according to the question x - y = 10 ........(2) Adding equation (1) and (2) we get, 2x = 114 ∴ x = 57 and 57 + y = 104 y = 104 - 57 y = 47 ∴ Required Class Interval is 47 - 57.
Tags
CCSS.7.NS.A.3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Choose the correct frequency distribution table for the data on height (cm) of 20 girls using the class intervals 130 - 135, 135 - 140 and so on. The heights of the girls in cm are: 139, 138, 144, 147, 165, 142, 149, 155, 149, 141, 134, 136, 131, 146, 160, 153, 133, 148, 140, 138
Answer explanation
Tags
CCSS.6.SP.A.2
CCSS.6.SP.B.5
CCSS.6.SP.A.1
CCSS.6.SP.B.4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The frequency distribution of weights (in kg) of 50 persons is given. What are the class marks of all the class interval?
30, 40, 50, 60, 70
35, 45, 55, 65, 75
30.5, 40.5, 50.5, 60.5, 70.5
35.5, 45.5, 55.5, 65.5, 75.5
Answer explanation
Class mark = (Lower limit + Upper limit)/2 1) (30 + 40)/2 = 35 2) (40 + 50)/2 = 45 3) (50 + 60)/2 = 55 4) (60 + 70)/2 = 65 5) (70 + 80)/2 = 75
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