Statistics for Research in Psychology by Rick Gurnsey

Author:Rick Gurnsey
Language: eng
Format: epub
Published: 2017-09-01T16:56:47.657000+00:00

Learning Check 1

State whether the following statements are true or false. y = x2 is a linear function.

y = 4 + 5(x) is a linear function.

is a linear function.

y = 4 + x/5 is a linear function.

y = sin(x) is a non-linear function.

The association between height and weight is probabilistic.

The association between height in inches and height in centimeters is probabilistic.

Answers

1. (a) False.

(b) True.

(c) False.

(d) True. Dividing x by 5 is the same as multiplying by 1/5.

(e) False. If you don’t understand why, you should Google “sinusoidal functions.”

(f) True.

(g) False. Height in centimeters = 2.54 times height in inches. There is a one-to-one association between these two measures, meaning that one is a function of the other.

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