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Step-Deviation
If all class marks differ by a common class width $$h$$, define:
$$u_i=\frac{x_i-A}{h}$$
Then:
$$x_i=A+hu_i$$
Usage
- Used to reduce large calculations in equally spaced grouped data.
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Step-Deviation
If all class marks differ by a common class width $$h$$, define:
$$u_i=\frac{x_i-A}{h}$$
Then:
$$x_i=A+hu_i$$
Usage
- Used to reduce large calculations in equally spaced grouped data.
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