LIMYONGDA's answer to jayden's Secondary 4 E Maths Singapore question.
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Use a calculator
For fx-97SG X
Press the following buttons:
Menu
Option 3
Option 1
Fill in the x column with all values
Hit OPTN
Option 3
On the fifth row is your std dev
For working out by hand use
Formula
Subtract the square of the average of the numbers from the average of the square of the numbers. Then take the results' square root. ( refer to formula sheet)
For fx-97SG X
Press the following buttons:
Menu
Option 3
Option 1
Fill in the x column with all values
Hit OPTN
Option 3
On the fifth row is your std dev
For working out by hand use
Formula
Subtract the square of the average of the numbers from the average of the square of the numbers. Then take the results' square root. ( refer to formula sheet)
Date Posted:
2 years ago
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