Mathematics, 23.04.2020 23:03, blaqsafire9291
One factor in the development of tennis elbow, a malady that strikes fear into the hearts of all serious players of that sport (including one of the authors), is the impact-induced vibration of the racket-and-arm system at ball contact. It is well known that the likelihood of getting tennis elbow depends on various properties of the racket used. Consider the accompanying scatterplot of x = racket resonance frequency (in hertz) and y = sum of peak-to-peak acceleration (a characteristic of arm vibration, in meters per second per second) for n = 23 different rackets. Discuss interesting features of the data and of the scatterplot. (Select all that apply.)
A. There are several observations that have identical or nearly identical x-values yet different y-values. Therefore, the value of y is not determined solely by x, but also by various other factors. B. There are several observations that have identical or nearly identical x-values yet different y-values. Therefore, the value of y is not determined by x. C. There appears to be a general tendency for y to increase in value as x increases in value. D. There appears to be a general tendency for y to decrease in value as x increases in value. E. There are two data points which are far removed from the remaining data points. These two data points have large x-values and small y-values. Their presence might have an undue influence on a line fit to the data. F. There are three data points which are far removed from the remaining data points. These three data points have small x-values and small y-values. Their presence might have an undue influence on a line fit to the data.
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