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Math 8 Data Test Review
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Write the equation of the trend line.
y=10x
Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?
75%
Describe the direction of the correlation in the context of the problem.
As absences increase, test scores decrease.
Describe the strength, direction, and shape of the graph.
Strong, negative, linear
Describe the direction of the correlation in the context of the problem.
As training time increases, the athlete's 100m time decreases.
Which scatter plot has a linear correlation?
C
Use the trendline to predict how many pages were read if 8 chapters were read.
80 pages
Use the trendline to predict how many chapter were covered if 160 pages were read.
16 Chapters
Of those who prefer skating, what is the relative frequency of those who are female? Round to the nearest TENTH!
78.6%
Of the males, what is the relative frequency of those who prefer bowling?
60%
Of those who were surveyed, what is the relative frequency of those who prefer dancing? Round to the nearest TENTH!
15.4%
Using the trend line, predict the score of a student who studies 10 minutes
70
Write the equation of the trend line.
y= x + 60 or y = 1x + 60
Which graph has no correlation? 4, 5, 6, or 7 ?
5
Which graph has the strongest correlation? 4, 5, 6, or 7?
6
Which graph is nonlinear? 4, 5, 6, or 7
7
Of those who said "Yes", what is the relative frequency of those who were female? Round your answer to the nearest TENTH!
35.3%
Of the males, what is the relative frequency of those who said "No"? Round your answer to the nearest TENTH!
21.4%
What is the relative frequency of females who said 'yes' in this data?
25%
Based on the trend line of this scatter plot, how much electricity would be consumed if the average daily temperature were 75 degrees? Round to the nearest whole number.
40 kWh
Describe the strength, direction, and shape of the data
Strong, Negative, and Linear Correlation
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