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Course: Digital SAT Math > Unit 3

Lesson 6: Scatterplots: foundations
Test prep
Digital SAT Math
Foundations: Problem solving and data analysis
Scatterplots: foundations
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Scatterplots: foundations

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Problem

Nightly News Viewers
This chart has one plot of data that starts in the upper left and trends toward the middle right.
The x-axis is years since nineteen eighty and has 5 major tick marks from 5 to 25, in steps of 5. The minimum value is 0 and the maximum value is 30. The y-axis is the number of viewers and has 10 major tick marks from 5 to 50, in steps of 5. The minimum value is 0, maximum value is 55.
The data set consists of 7 points of data. The leftmost data point is at x = 0 and y = 52. The rightmost data point is at x = 30 and y = 23.
A trend line is drawn from the leftmost point to the rightmost point.
The graph shows information on the average number of Americans who viewed the nightly news from 1980 to 2010. A line of best fit is shown on the scatterplot, where t represents years since 1980 and V represents the average number of nightly news viewers, in millions, for that year. According to the model, which of the following is the best interpretation of the slope of this line?
Choose 1 answer:
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