Activity- statistics problems

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Problem 1

If n =10, = 12 and

INTERPRETATION OF PROBLEM

Previous knowledge

Solution:





σ=
σ=
σ=
σ=
σ=
σ=3

Problem 2

find the Standard deviation for the following data.
x 3 8 13 18 23
f 7 10 15 10 8

INTERPRETATION OF PROBLEM

Previous knowledge

Solution: