Formula Sheet For S1 Edexcel 307063
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Formula Sheet for S1 Edexcel
∑
=
= mean
M=b+(
= Linear Interpolation Formula
(‘Lower class bound of the median class’) +(
Q1 =
Q2 =
Q3 =
Percentiles work in the same formula, e.g. 90th percentile =
∑
√
(
∑
)
= Variance
= Standard Deviation y=
y = coded value x = original value a and b will be given in the question
= Coded Value
∑
=
= mean
M=b+(
= Linear Interpolation Formula
(‘Lower class bound of the median class’) +(
Q1 =
Q2 =
Q3 =
Percentiles work in the same formula, e.g. 90th percentile =
∑
√
(
∑
)
= Variance
= Standard Deviation y=
y = coded value x = original value a and b will be given in the question
= Coded Value
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