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03 Mar 2020, 07:50
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Dropdown 1: Between 10-12
Dropdown 2: Strong Negative
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
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70% (02:26) correct
30%
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In Country X, a ballroom is classified as Category C if it has a ceiling of at least 10 meters. In the graph, each of the 22 Category C ballrooms is represented by two points arranged vertically: one representing the comparison of the height of the ballroom's ceiling to the number of tiles in the ballroom area (black circles), the other representing the comparison of the height of the ballroom's ceiling to the mean length per tile in the ballroom area (red squares).
Based on the given information, use the drop-down menus to most accurately complete the following statements about Category C ballrooms in Country X.
The ballroom with the greatest mean length per ballroom tile has a ceiling height meters.
There is a correlation between the number of ballroom tiles and the mean length per ballroom tile.
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Official Answer
Dropdown 1: Between 10-12
Dropdown 2: Strong Negative
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09 Sep 2021, 08:54
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Official Explanation
1) The ballroom with the greatest mean length per ballroom tile has a ceiling height___________meters.
The ballroom with the greatest mean length per ballroom tile has a ceiling height represented by the uppermost red square on the graph. The horizontal coordinate of this square indicates that the ceiling height of the ballroom is between 10 and 11 meters.
The correct answer is Between 10-12.
2) There is a_________correlation between the number of ballroom tiles and the mean length per ballroom tile.
Where the red squares are in the upper portions of the graph, the corresponding black circles are generally in the lower regions. Similarly, where the red squares are in the lower portions of the graph, the corresponding black circles are generally in the upper regions. This demonstrates a strong negative correlation between the variable represented by the vertical coordinates of the red squares and the variable represented by the vertical coordinates of the black circles. Thus there is a strong negative correlation between the number of ballroom tiles and the mean length per ballroom tile.
The correct answer is Strong negative.
1) The ballroom with the greatest mean length per ballroom tile has a ceiling height___________meters.
The ballroom with the greatest mean length per ballroom tile has a ceiling height represented by the uppermost red square on the graph. The horizontal coordinate of this square indicates that the ceiling height of the ballroom is between 10 and 11 meters.
The correct answer is Between 10-12.
2) There is a_________correlation between the number of ballroom tiles and the mean length per ballroom tile.
Where the red squares are in the upper portions of the graph, the corresponding black circles are generally in the lower regions. Similarly, where the red squares are in the lower portions of the graph, the corresponding black circles are generally in the upper regions. This demonstrates a strong negative correlation between the variable represented by the vertical coordinates of the red squares and the variable represented by the vertical coordinates of the black circles. Thus there is a strong negative correlation between the number of ballroom tiles and the mean length per ballroom tile.
The correct answer is Strong negative.
General Discussion
03 Mar 2020, 08:17
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1) The one with greatest mean length per ballroom is having height between 10 & 11, so option A is right
2)There is a negative correlation between both the quantities since when one increases the other decreases
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2)There is a negative correlation between both the quantities since when one increases the other decreases
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