S1

Chapter 7

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Explanatory value
The independent value - goes along x axis, is the thing that I change.
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Response value
The dependent value - goes up y axis, changes as a result of the independent.
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Equation of regression line (of y on x) GIVEN IN BOOKLET
y=a+bx where b = Sxy/Sxx and a = ybar - bx̄
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(∑x)/n
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With coded data, find y on x regression line with given coded data...
then sub in the y code to equal the y regression coded and same with x.
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Coded regression line may be different to actual regression line.
Linear changes affect the answer.
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Interpolation
Estimate the value of a dependent variable within the range of the data. RELIABLE ESTIMATE
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Extrapolation
Estimate the value of a dependent variable outside of the data range. UNRELIABLE ESTIMATE
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Other cards in this set

Card 2

Front

The dependent value - goes up y axis, changes as a result of the independent.

Back

Response value

Card 3

Front

y=a+bx where b = Sxy/Sxx and a = ybar - bx̄

Back

Preview of the back of card 3

Card 4

Front

(∑x)/n

Back

Preview of the back of card 4

Card 5

Front

then sub in the y code to equal the y regression coded and same with x.

Back

Preview of the back of card 5
View more cards

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