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Originally posted by Sajjad1994 on 12 Feb 2020, 10:03.
Last edited by BottomJee on 02 Dec 2023, 04:52, edited 2 times in total.
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The graph shown is a scatter plot with 60 points, each representing the number of quality assurance inspections conducted on products manufactured at 60 different factories, and the corresponding numbers of product recalls experienced by each factory. Each factory conducted a consistent number of quality assurance inspections on all products produced during a one-year period, and the number of product recalls was measured over that same period. The solid line is the regression line, and the dashed line is the line through the points (1, 1) and (7, 5). Select the best answer to fill in the blanks in each of the statements below based on the data shown in the graph.
1. The slope of the regression line is .
2. The number of products that received more than seven quality assurance inspections is closest to percent of 60.
1)Slope of regression line would be 0 since the y coordinates corresponding to x values of 5 & 1 are approximately equal 2)4 = number of products with > than seven was inspection and it is approximately 6.7% of 60, nearest to 10% 3)zero,since the product recalls hardly changes with the number of qa inspections
1)Slope of regression line would be 0 since the y coordinates corresponding to x values of 5 & 1 are approximately equal 2)4 = number of products with > than seven was inspection and it is approximately 6.7% of 60, nearest to 10% 3)zero,since the product recalls hardly changes with the number of qa inspections
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Hi,
Shouldn't the slope of regression line be positive as the two points given are (1,1) and (7,5), which give us slope 2/3 ??
1)Slope of regression line would be 0 since the y coordinates corresponding to x values of 5 & 1 are approximately equal 2)4 = number of products with > than seven was inspection and it is approximately 6.7% of 60, nearest to 10% 3)zero,since the product recalls hardly changes with the number of qa inspections
Posted from my mobile device
Hi,
Shouldn't the slope of regression line be positive as the two points given are (1,1) and (7,5), which give us slope 2/3 ??
Show more
this shall be for dashed line. the question is asking for solid/regression line.
1)Slope of regression line would be 0 since the y coordinates corresponding to x values of 5 & 1 are approximately equal 2)4 = number of products with > than seven was inspection and it is approximately 6.7% of 60, nearest to 10% 3)zero,since the product recalls hardly changes with the number of qa inspections
Posted from my mobile device
Hi,
Shouldn't the slope of regression line be positive as the two points given are (1,1) and (7,5), which give us slope 2/3 ??
Show more
+1 Slope of regression line must be +ve (As per rules of Coordinate Geometry)
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