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现在参加这个测试
U1 -- WK2 -- 8.SP.2
  • 1. Most of the data in real life situations is ordered and fits a line with hundred percent accuracy.
A) FALSE
B) TRUE
  • 2. If the data points are "scattered", then we try to find a line that best fits the data.
A) FALSE
B) TRUE
  • 3.
A) d
B) c
C) a
D) b
  • 4. A scatter plot is a plot of all the ordered pairs in a table.
A) FALSE
B) TRUE
  • 5.
A) A
B) D
C) B
D) C
  • 6. Strong positive and negative correlations have data points _____ to the line of best fit.
A) far away
B) very close
C) fairly close
D) from right to left
  • 7. Which is true about this graph?
A) Line 1 is the better line of best fit because there are about as many points above and below the line.
B) Neither line is appropriate, because there is a negative correlation present in the scatterplot.
C) There is no correlation present in this scatterplot.
D) Line 2 is the better line of best fit because it passes directly through 2 of the points on the graph.
  • 8. Which is true about this graph?
A) There is no correlation present in this scatterplot.
B) A line with a positive slope should be used to model the scatterplot data.
C) A line with a negative slope should be used to model the scatterplot data.
  • 9. The correlation in this scatterplot is best described as _________________.
A) weak positive correlation
B) moderate negative correlation
C) moderate positive correlation
D) strong positive correlation
  • 10. The correlation in this scatterplot is best described as ______________.
A) strong negative correlation
B) weak positive correlation
C) weak negative correlation
D) strong positive correlation
  • 11. The line of best fit in this image is not a good line of best fit because:
A) there is no correlation in this scatterplot
B) it is not drawn through the middle of the points
C) it should be going down from left to right
  • 12. The correlation in this scatterplot is best described as ______________.
A) strong negative correlation
B) moderate negative correlation
C) weak negative correlation
D) no correlation
参加了这次测试的学生也参加了 :
Pythagorean Theorem
F2 -- wk2 -- 8.sp.2
F2 -- wk1 -- 8.sp.1
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