SAT Math · Topic 3.4

Two-Variable Data: Models and Scatterplots Practice

Part of Problem-Solving and Data Analysis.

Practice questions

38

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Sample questions

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Sample 1difficulty 2/5
$A scatter plot shows that as study hours increase, test scores increase. This indicates:$
- A
  $Negative association$
- B
  $Exponential decay$
- C
  $Positive association$
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- D
  $No association$
Why
$When both variables increase together, the association is positive.$
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Sample 2difficulty 2/5
$A scatter plot of car age (years) vs. car value (dollars) shows points trending downward from left to right. This is:$
- A
  $Negative association$
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- B
  $No association$
- C
  $Exponential growth$
- D
  $Positive association$
Why
$As age increases, value decreases — a negative association.$
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Sample 3difficulty 3/5
$y = 30x + 100$
- A
  $Hourly wage$
- B
  $Hours worked$
- C
  $Maximum cost$
- D
  $Cost when no hours are worked$
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Why
$y$
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Sample 4difficulty 3/5
$r$
- A
  $0$
- B
  $+1$
- C
  $0.5$
- D
  $-1$
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Why
$r$
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Sample 5difficulty 3/5
$y = -2x + 50$
- A
  $25$
- B
  $30$
- C
  $35$
- D
  $20$
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Why
$y = -2(15) + 50 = -30 + 50 = 20$
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