Two-variable data: Models and scatterplots

Medium Math · Problem-Solving and Data Analysis · Two-variable data: Models and scatterplots · MCQ

The figure presents a scatterplot titled “Railroad Museum Visitors.” The horizontal axis is labeled “Years since 1968,” and the numbers 0 through 15, in increments of 5, are indicated. The vertical axis is labeled “Annual visitors,” and the numbers 0 through 80,000, in increments of 20,000, are indicated. There are 13 data points indicated on the scatterplot. The data points begin at the point with approximate coordinates 0 comma 5,000, and trend upward and to the right until they end at the point with approximate coordinates 12 comma 75,000. A line of best fit is drawn. The line begins at the point with approximate coordinates 0 comma 16,000, and slants upward and to the right. It passes through the point with approximate coordinates 5 comma 40,000, and continues upward until it ends at the point with approximate coordinates 12 comma 74,000.

The scatterplot above shows the number of visitors to a railroad museum in Pennsylvania each year from 1968 to 1980, where t is the number of years since 1968 and n is the number of visitors. A line of best fit is also shown. Which of the following could be an equation of the line of best fit shown?

A
$n equals, 16,090, plus 4,680, t$
B
$n equals, 4,690, plus 16,090, t$
C
$n equals, 16,090, plus 9,060, t$
D
$n equals, 9,060, plus 16,090, t$

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id cb_question_bank:8e176d11-624a-467c-bc07-bf73bad42b18 · question 3c5b19ef · IBN 026150-DC · JSON