The trend line with 1975 as origin is Y=20.6+1.68X, the trend line with 1971…
2021
The trend line with 1975 as origin is Y=20.6+1.68X, the trend line with 1971 as origin will be –
- A.
Y = 20.6 + 6.72X
- B.
Y = 13.88 + 1.68X
- C.
Y = 34.61 + 1.68X
- D.
Y = 26.32 + 6.72X
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Correct answer: B
To shift the origin from 1975 to 1971, subtract 4 years. Replace X with (X - 4) in the original equation Y = 20.6 + 1.68X. This gives Y = 20.6 + 1.68(X - 4) = 20.6 + 1.68X - 6.72. Simplifying yields Y = 13.88 + 1.68X.