Question

find mean, standard deviation and coefficient of variation.


class interval
550-650
650-750
750-850
850-950
950-1050
Frequency 
8
60
24
16
12​

Answer 1

Answer:

Identify the reason for writing a thesis statements, and list three characteristics of a strong thesis statement.Identify the reason for writing a thesis statements, and list three characteristics of a strong thesis statement.Identify the reason for writing a thesis statements, and list tthesis statements, and list three characteristics of a strong thesis statement.

Step-by-step explanation:

Identify the reason for writing a thesis statements, and list three chara

Answer 2

Answer:

C.I f Mid point x fx D=X−

X

D

2

fD

2

1−5 1 3 3 −10 100 100

6−10 2 8 16 −5 25 50

11−15 3 13 39 0 0 0

16−20 4 18 72 +5 25 100

N=10

∑fx=130

∑fD

2

=250

Standard Deviation =σ=

N

∑fD

2

=

10

250

=

25

Therefore, σ=5

Coefficient of variation, C.V=

x

σ

×100=

13

5

×100=

13

500

=38.46

Answered By

toppr

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