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13 Oct 2023, 00:35
Kudos
Bookmarks
Dropdown 1: 2009
Dropdown 2: –0.1875
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
60% (02:19) correct
40%
(02:35)
wrong
based on 795
sessions
History
Date
Time
Result
Not Attempted Yet
Attachment:
12.jpg [ 62.39 KiB | Viewed 6421 times ]
The following graph shows the number of injuries and illnesses a corporation reported per 100 full-time workers from 2003 to 2011. The solid line is the regression line for the data. The dotted line connects the points for 2003 and 2011; it represents the average rate of change in reported injuries and illness over the eight-year period.
1. The least-squares regression line is least successful at predicting the number of injury and illness reports in .
2. The average rate of change in injury and illness reports over the years from 2003 to 2011 was approximately cases per 100 workers per year.
Show SpoilerAdditional Question
The decline in injury and illness reports slowed during the years from ____________.
(A) 2003 to 2005
(B) 2005 to 2007
(C) 2007 to 2009
(D) 2009 to 2011
(E) The decline was constant from 2003 to 2011.
(A) 2003 to 2005
(B) 2005 to 2007
(C) 2007 to 2009
(D) 2009 to 2011
(E) The decline was constant from 2003 to 2011.
Data Insights (DI) Butler 2023-24 [Question #40, Date: Oct-13-2023] [Click here for Details]
Question #1 based on the same graph is available here
ShowHide Answer
Official Answer
Dropdown 1: 2009
Dropdown 2: –0.1875
21 Oct 2023, 07:22
Kudos
Bookmarks
Hi there,
Can anyone help me understand how -0.1875 is the correct answer for the second question? Thank you
Can anyone help me understand how -0.1875 is the correct answer for the second question? Thank you
22 Oct 2023, 03:03
Kudos
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Hereil
Hi there,
Can anyone help me understand how -0.1875 is the correct answer for the second question? Thank you
Can anyone help me understand how -0.1875 is the correct answer for the second question? Thank you
Official Explanation
2. The average rate of change in injury and illness reports over the years from 2003 to 2011 was approximately _________ cases per 100 workers per year.
The average rate of change in injury and illness reports is the slope of the dotted line. Calculate this as the difference in cases reported divided by the number of years: \(\frac{3.5-5}{8} = \frac{-1.5}{8} = -0.1875\) case per 100 workers per year.
Answer: B
2. The average rate of change in injury and illness reports over the years from 2003 to 2011 was approximately _________ cases per 100 workers per year.
The average rate of change in injury and illness reports is the slope of the dotted line. Calculate this as the difference in cases reported divided by the number of years: \(\frac{3.5-5}{8} = \frac{-1.5}{8} = -0.1875\) case per 100 workers per year.
Answer: B
