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Quiz Discussion

Title: Measures of variation- Population Standard deviation

Grade: 9-a Lesson: S2-L2

Explanation: Let us discuss a few questions on this topic and review the answers to every question.

Quiz: Discussion in Class

Problem Id	Problem	Options
Steps 1	Four friends were comparing their scores on a recent essay.Find the standard deviation: 6,2,3,1	A) 5 B) 6 C) 2.7 D) 1.87
Steps 2	John has scored marks in 5 subjects then what is the standard deviation: 55,69,78,49,99	A) 17.33 B) 20.56 C) 15.98 D) 78
Steps 3	Mary has brought 8 pens which has been labeled with numbers then find out the standard deviation: 2,5,9,6,7,2,5,8	A) 8 B) 3.5 C) 5.6 D) 2.4
Steps 4	Following are the salaries of 3 teachers in a school of this month.Find the standard deviation: 12,8,10	A) 4 B) 1.6 C) 2.3 D) 30
Steps 5	Find the standard deviation from the given data: 2.5,9.2,1.6,3.7,1.1	A) 1.3 B) 9.3 C) 2.9 D) 7.3

Problem Id

Problem

Options

Steps 1

Four friends were comparing their scores on a recent essay.Find the standard deviation:
6,2,3,1

A) 5
B) 6
C) 2.7
D) 1.87

John has scored marks in 5 subjects then what is the standard deviation:
55,69,78,49,99

A) 17.33
B) 20.56
C) 15.98
D) 78

Mary has brought 8 pens which has been labeled with numbers then find out the standard deviation:
2,5,9,6,7,2,5,8

A) 8
B) 3.5
C) 5.6
D) 2.4

Following are the salaries of 3 teachers in a school of this month.Find the standard deviation:
12,8,10

A) 4
B) 1.6
C) 2.3
D) 30

Find the standard deviation from the given data:
2.5,9.2,1.6,3.7,1.1

A) 1.3
B) 9.3
C) 2.9
D) 7.3