Answer:
The regression line is not an appropriate model due to the existence of a pattern in the residual plot.
Step-by-step explanation:
A residual plot has been provided for a certain data set.
The residual plot indicates a scatter relationship between x and y.
The plotted points demonstrate that a linear relation is unlikely; it appears to be more parabolic or exponential in nature.
This suggests the regression line is not a suitable model as the residuals do not converge towards 0.
Additionally, a linear trend pattern is absent.
D) The regression line is not a suitable model as it exhibits a pattern in the residual plot.
To plot the graph of a linear equation, two points suffice to create a line.
Nevertheless, errors can occur; thus, when the line is drawn, it may seem accurate. Two points will always define a line, regardless of the correctness of those points.
To confirm that the points are accurate, we find a third point to verify that the two previously calculated points are correct and that all points align on the same line. If they don’t, an error has been made.
Option A) is the correct choice
Answer:
The length of each individual chain link is calculated as 5.33 cm.
Step-by-step explanation:
Initial data: the chain consists of 1000 links
the overall length recorded is 0.0533km.
1km = 1000m
1m = 100cm, thus 1km = 100000cm
So, the total length in centimeters = 0.0533* 100000
Total length in cm = 5330 cm
To find out the length of a single chain link, we do:
length of one chain link = 5330/1000
Thus, the length of a single chain link equals 5.33 cm.
