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U1 -- WK2 -- 8.SP.2 - Questionário
  • 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) c
B) d
C) b
D) a
  • 4. A scatter plot is a plot of all the ordered pairs in a table.
A) TRUE
B) FALSE
  • 5.
A) B
B) D
C) A
D) C
  • 6. Strong positive and negative correlations have data points _____ to the line of best fit.
A) fairly close
B) very close
C) from right to left
D) far away
Screen Shot at
  • 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) There is no correlation present in this scatterplot.
C) Line 2 is the better line of best fit because it passes directly through 2 of the points on the graph.
D) Neither line is appropriate, because there is a negative correlation present in the scatterplot.
Screen Shot at
  • 8. Which is true about this graph?
A) A line with a negative slope should be used to model the scatterplot data.
B) A line with a positive slope should be used to model the scatterplot data.
C) There is no correlation present in this scatterplot.
Screen Shot at
  • 9. The correlation in this scatterplot is best described as _________________.
A) weak positive correlation
B) moderate positive correlation
C) strong positive correlation
D) moderate negative correlation
  • 10. The correlation in this scatterplot is best described as ______________.
A) weak positive correlation
B) weak negative correlation
C) strong positive correlation
D) strong negative correlation
Screen Shot at
  • 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 should be going down from left to right
C) it is not drawn through the middle of the points
Screen Shot at
  • 12. The correlation in this scatterplot is best described as ______________.
A) no correlation
B) weak negative correlation
C) strong negative correlation
D) moderate negative correlation
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F2 -- wk2 -- 8.sp.2
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